Last updated on December 16th, 2025 at 03:06 pm
NecroMerger – Idle Merge Game – Simulation Game Review
NecroMerger – Idle Merge Game is a Simulation/Roleplaying game from Grumpy Rhino Games LTD, first launched in 30th August 2022.
It’s rated 12+ and currently has 5,500+ ratings on the App Store.
What Makes NecroMerger – Idle Merge Game Stand Out
The Devourer is always hungry and it’s your job to feed it in this idle merge game mashup. Play as the NecroMerger and use dark magic to summon an array of creatures (skeletons, zombies, demons, banshees… the list goes on). Merge them from piddly little grunts into massive (and tasty) brutes, before feeding them to your ever hungry pet.
As you grow your Devourer you’ll attract the attention of merchants, champions and even rivals. Some can be useful, others must be fought… or fed to your insatiable pet. The bigger the Devourer grows the more your lair will expand and you’ll unlock powerful abilities and spells.
Complete tasks to unlock new stations and equipment… graves, altars, fridges and even a bathtub to hold excess slime. New stations will let you summon new, stronger (and even more tasty) creatures. Manage your lair and your underlings to maximize your resource generation.
NecroMerger is a whole new type of game, which combines merge and idle mechanics with resource management to create something truly unique.
Grow Monsters
- 70+ creatures to spawn and merge.
- Creatures have unique abilities to manage (resource generation, damage, deliciousness)
- Legendary Creatures with massive benefits.
Expand your Lair
- Expand your lair. Unlock new equipment including; graves, supply cupboards, lecterns.
- Attract Champions, merchants and thieves to your lair.
- Complete tasks, master spells, brew potions.
Idle Merge Mashup
- A unique system of resource management.
- Resources generate even when you’re offline.
- Months of fun!
From the makers of Idle Apocalypse and Idle Mastermind, NecroMerger has all the humour and inane chatter you’d expect of a Grumpy Rhino Game.
This Simulation game offers engaging gameplay and regular updates for mobile players.
Player Feedback
As a newer release, NecroMerger – Idle Merge Game is building its player community. Early feedback suggests .
Recent Updates & Development
Latest Update: 3rd December 2025
Recent improvements include:
- Added the Rune Cube. A new item that lets you trade runes for other runes.
- Added the Sceptre. This new item lets you complete a Craving of your choice.
- Updated the Unstable Rift to summon some new characters, as well as having a higher chance of summoning Champions. It no longer spawns items directly.
- Updated the cost of some trades in the Shop and from the Merchant.
- Technical Update.
- Fixed some issues with version 1.74.
Download & Availability
NecroMerger – Idle Merge Game is available through the official App Store for iOS devices.
Get NecroMerger – Idle Merge Game on App Store
Requirements: Requires iPhone 5s / iPad Air / iPad Air (Cellular) / iPad Mini 2 (Retina) / iPad Mini 2 (Retina, Cellular) / iPhone 6 / iPhone 6 Plus / iPad Air 2 / iPad Air 2 (Cellular) / iPad Mini 3 or later.
Compatible with iPhone and iPad devices.
Player Experience Highlights
Community Insight:
Been playing for about two years now, free to play, you can pay for certain upgrades and things to make life better, but not necessary.
The game is super fun through and through. Ive enjoyed all of it.
As the title states, this is the best idle merge game youll find. At least in our opinion. The story is cute, the art is awesome (Im partial to pixel art) and you can actually progress without feeling rushed through it or like youre getting nowhere. We love the collection aspect of getting every creature to max lvl, it actually feels rewarding to use the generators and to watch ads and spend gems. We found ourselves teetering on the edge of spending money on this game, which we NEVER consider for mobile games. Im not finished with the game at all, literally just in the middle of it, but we love it so much we needed to leave a 5 star review. Play this game.
We dont know if its not a feature or like we just havent gotten the that part of the game yet but their should be a health system for monsters so that when you defer one of the people that come to you babes and have attack left over it should not just vanish and should just lower the damage bar and their should also be a cool function where the to you use to make the mummy can be use to heal them a bit.
Game is truly fun, fully functional, no pop up ads unless chosen too do. All ads give genuinely useful items. No transaction or passes forced down the throat. Just a simple and fun game. Only criticism we have is that we wish the events cooldown was shorter or you could do multiple events at once(aside from the courtyard) we really dont like waiting a week since we have time on our hands and the game can get slow whenever you dont have all the resources.
This game is incredible and beautiful. No ads unless you choose to watch one for a reward and the art is just amazing. We hope more monster options are added to the game because this is so dang cool.
We play this game so often every day that we only max our resources when Im sleeping. We love this game. We watch all the ads every day for more resources. After the last update when we try to watch ads they sometimes dont play, and when they do they dont give us rewards. We need our valuable chests back. Please let us watch ads.
Good game, gets borning because its repetitive but thats just how merging games are. Bht for a merging game its pretty good so 10/10.
The game is fun (though a bit grindy) and Ive put many hours into it. However, over the last month the stability of this game has gotten worse and worse. Whether this is the developers fault, Apples fault, or something with our phone we dont know. We know we cant launch the game any more without it crashing. But at the same time we havent deleted it hoping the next update fixes whatever issue Im having.
The game is amazing, we havent had a single issue with the game at all except this small thing bugging us. The legendary minions. Its the fact that you cant feed them to the devoured at all, without any way to get rid of them. So when you accidentally make to many, youre just stuck, soft locked even. 10/10 game though.
Ive been playing this game for well over 2 to 3 years now, and it is so much fun, in the years that Ive been playing we havent run out of things to do. Super fun and as we said it has no forced adds, like, at all. Its wonderful. You can watch adds for some in game stuff but thats it, you can if you want to. Great fun game, highly recommended.
We like the pacing of the progression, the art direction, the music, and the combat system. We usually avoid merge games but this one is fun. We also like that you dont have lives or daily time/resource limits. You just generate resources and find ways to speed it up – how an idle game should be! The only money Ive spent is on removing the ads, which the game never forces on you. You can play the whole game without spending a cent or seeing an ad. Our only recommendation is that we wish we could tap on the devourer so that he reacts as if Im petting him? Probably too ambitious, but one can dream.
This app hooked us immediately and now we play it every day. Love the art style, it's refreshing and unique compared to all the soulless merge games out there. We try not to spend too much money on mobile games, but we don't feel bad at all supporting the creators of this app every once in a while. You can tell there's a lot of love, passion, and effort put into this game.
We absolutely adore this game and the developers! Constant updates, events, and bug fixes. Works without internet! The art is so well done and it's such a good time filler.
The style of gameplay changes as you go; you reset several times. Its comforting.
Absolutely excellent! Ive been playing this for a while now, this game is free to play through and through. The gameplay loop and progression is incredibly satisfying, the grind is super fun even into the late game. The art is exemplary, the sound design is great, the humor sprinkled throughout is actually funny and is such a great cherry on top. We feel like we can progress a lot by just playing for a short check-in a day. The biggest pull for us was the voluntary adds, they would actually give tangible rewards for wasting your time. After playing for about a year, we bought the add free version for a very affordable price, and it felt more like a huge upgrade to the game vs just unlocking being able to play the full game like most other apps. The pacing is very good. (Small spoiler) there is a reset/new game plus where you can increase your level to unlock more, but it always feels fresh to play the early game again. The events are an enjoyable challenge and all beatable without paying money. We always seem to be drawn back to this game after any break Ive taken from playing. It is entirely worth it, and a quick and easy game to pick up and play whenever during the day. The lack of paywalls and the voluntary adds elevates it above all others of its kind, offering satisfying long-term gameplay, well deserving of 5 stars.
No notes, keep at it forever. Thanks.
All around, we have nothing negative to say. The gameplay loop is fun, exactly what you would expect out of most merging games but decently streamlined. It can be a bit grindy at times but that never bothered us personally, and you still make progress regardless as long as youre actually playing. Theres no forced ads, and the ads that are in the game are for sizeable rewards and are still completely avoidable regardless. Theres style is nice and the music is boppin, good way to pass the time.
This game is very charming, and we really like the pixelart! We like all the monster designs (especially the eye monster) and the titular NecroMerger also looks quite cool. We also think the dialog can be funny and we really like the premise! This game is worth your time.
It's a really fun game. We spent quite a lot of money after playing it for just a few days, but we were willing to do so. We just hope that there will be a Chinese translation added in the future. We also saw many Chinese players on Google Play reflecting on this issue. We hope there will be more language options available in the future.
We love the game. There are lots of things to do so you have basically nothing to run out of to do. The game to us is a comfort game, we always come to it when we dont know what to do, or when we want to spend time doing something, the frequent updates also are helpful to expand and make the game longer, great job devs, only thing we personally would want/like, is maybe some faster updates, but other than that we really enjoy it.
Best mobile game there is. Its the only one thats been able to keep our attention this long and been worth it. Its a great merging game, it has great art, great mechanics, and it actually has engaging strategy with managing resources, lair space, upgrades and so on. Play it.
This game is absolutely amazing, so many details packed into every corner. Ads are optional and you dont have to watch them to progress. Funny random dialogue between characters really adds to the atmosphere, the game also has great progression in our opinion, a fast start and a slower end game. Truly a great game, so developers if you are reading this thanks and please keep updating the game.
(THERE IS A WAY TO BYPASS THE WAIT FOR MORE MANA ETC. BUT we CANT SHARE THAT ALL IMA SAY IS THIS APP DOESNT REQUIRE WIFI TO PLAY. ) we tend to play this game and have a tendency to merge to quickly. Its to the point where the animation of feeding locked chests or other recommended to use items limit our gameplay. At this point the slow pace of the merging itself makes the game a but slow to play and simce we know how to get unlimited resources its not an issue about that. And the animation for the characters to move to the spot we want them takes too long to the point where we miss multiple merges and get out of our zone because we feel like im merging slower. If the game didnt limit how fast you could go id absolutely love this game because it already scratches that ocd/adhd spot but the game itself feels slower than what we are able to play.
We love the game but sometimes when we buy something with gold, gems or runes, it works but sometimes it dont give us what we purchased.
We like this game a lot. Fun theme, spectacular presentation, satisfying progression, and so on. But. We recently unlocked a permanent upgrade that has in some ways felt like an active downgrade: tapping the NecroMerger can now provide Slime instead of Mana. This is great in that it lets us get Slime more quickly. It is less great in that, unless our Slime is at its cap, it takes about twice as long to get the amount of mana we want from the NecroMerger by tapping. We genuinely dont see why slime generation has to take away from mana generation here. It wouldnt be overpowered and would make much more sense from a quality of life perspective to just have the NecroMerger give all unlocked resources instead of just one at a timeor at least let you CHOOSE the resource type. We cant imagine what a nightmare itll be once we unlock the ability to generate Darkness as well. Devs, please change this. Youve made so many great decisions across the board to make this game incredibly satisfying to play. Please fix this one little issue. Its so frustrating to feel like we used to be able to do this faster, but now we cant go back.
Its a good game, but the ads (while completely optional) are insane. Theyre usually 1-2 minutes of the same 20 second ad playing on repeat. Whats the point of that.
Wonderful game, but so much is reliant on ads and now all the ads are 2 minutes long and just loop the same 20-30 second ad over and over. Its terribly annoying.
Lvl 27 right now, cant wait to see what else there is to unlock.
We played it for many years on our android. We wish we were able to play it on here and transfer our data. Otherwise, great game.
We never write reviews for anything, let alone an apple Game, but this has to be one of the best games we have come across. It starts seemingly to be a pixelated merge game, but it has so much more content than expected. An avid fan base on Reddit/Discord, and everyone is so helpful. Can be completely Free to play, but loved spending a couple bucks here and there to help the developers out, and speed up our own progress! Thanks for designing such a wonderful game, and coming out with updates regularly.
Genuinely the most character Ive seen in a mobile game in years. We are super obsessed. A lot of space management issues that make this game a grind until a certain point but very fun. There are some really great mechanics at play here to make this game last.
This is literally the only game we have on our phone. We really like how it looks and we enjoy the game play. We believe this is a really good game.
Could not ask for a better mobile game. Visuals? Amazing. Gameplay loop? Pretty addicting. The fact that the ads are completely voluntary? Im starting to question how you guys make money. We will say that the rebirth mechanic is irritating, but honestly we got back to where we were so quickly that we dont mind all that much. Just thought Id write a review since this game is so peak.
Im just gonna say this game is stupidly adorable, addictive, and fun. The art style is fun and we love the NecroMergers sassy dialogue. Im looking forward to continuing feeding our adorable eldritch abomination.
Im still playing this, but its mostly out of habit at this point. Even with the Time Machine feature, it becomes more of a chore in later stages of gameplay. Its a very long grind and a slog to keep rebuilding over and over. Theres no way to advance enough to make it fun again without spending quite a lot of real cash on it, and we dont waste money on mobile games if we can help it. We liked it enough to buy permanent ad skip and that was worth it, Im not going to regularly spend money, though. One feature thats exceptionally annoying is that the cravings system will ask for minions of a higher level than youre able to get quickly, and there is zero way to avoid this, so youre stuck with no cravings bonuses until you can get the next station/level required. This happens every playthrough and the Dietician is useless because thats also gate kept by level (makes her pretty pointless in early game/rebuilding after a Time Machine use, when you need all the help you can get). All in all, pretty fun for a while, but unless youre willing to spend real money, dont expect later gameplay to be very entertaining. Its like that for all mobile games, so it isnt surprising. If you dont mind a time sink and later endless slow grinding, its okay.
This game is really good for a mobile game.
This game is excellent. Like top tier gaming. Its not trying to be a PS5 game. It just good, old fashioned fun with cute little monsters.
We think all the reviews that talk about how slow it is have never played a merge game or an idle game before and think that just because it's not their playstyle, 'it must be bad'. We think honestly the options this game adds to keep playing when you're out of a resource are very nice and a LOT more leniant than we've seen with any other mobile game. We can open the app, mess with things for a bit, then check back in like an hour and we can do the same thing again. Love the game, bought the ad free package even though we hadn't even gotten any forced ads because we reasoned we were completely willing to pay $10 if this game was $10.
The pixel art is cute, the merges are satisfying, the premium currency is pretty easy to earn honestly! The ads are fair, theyre not forced on you and they offer reasonably good rewards to warrant watching the ad. Ive progressed decently and so far our only real complaint is that some of the objectives feel a bit too grindy, sometimes the cravings are for creatures you havent unlocked yet, which can back you into a progress corner until you get that station unlocked. We liked it enough we went ahead and gave them the ad-free, fair pay for a fair game.
Don't even waste your time downloading it, you have fun for maybe 10 mins then the game just turns into "close the game and wait or pay us money." Devs fr had something cool going then ruined it with toxic monetization systems.
Ive had a blast with the games from this studio. This charming idle game has a nice art style and lovely tidbits of humor throughout. We cant wait to eventually reach the end; its completely captivated us so far :).
Simply put, youre wasting your time with other games. This game isnt like any other mobile game Ive played. Sure there are ads but within a few days of playing, we happily purchased the no ads forever for like five bucks and didnt look back. Stop reading reviews trying to justify the download, you wont regret trying out this game.
We will start by saying this is one of the best idle games we have every played. So far the art style and theming is spot on, the No ai is something we didnt expect to appreciate so much but thats the world we are in right now. We love the food mechanic to build further steps in the game. Our one negative so far is with a legendary minions. We think the mechanic is great and love that it not only gives cap bonuses but also create resources. However, we do feel like it becomes an issue with building those resource uses back up. Having to build up and merge two level 5 sources is great but we wish that we would get back at least a level three if not higher. Ive just gotten the gorgon and now we have no access to mummies. It just feels bad to lose access to minion types to get one legendary minion.
60+ second ads are unacceptable. We cant close the app fast enough when they pop up, and its been happening a lot lately.
Great pixel game with banger music and sound effects animation etc. Monetization is perfect as well.
We love some idle gams and this is the best one Ive played.
Masterpiece, our favorite game on the App Store.
This game is AMAZING. You have absolutely no random pop-up ads, its a simple game, and has so much content to it! It genuinely surprises us with how much there is in this game. It just keeps going.
But, we would like a way to summon the lil peasants knights and clerics and whatnot instantly with an ad or smth.
User feedback from Apple App Store
App Details
- Version: 1.75
- Size: 642.65 MB
- iOS: 15.0 or later
- Languages: EN
- Content Advisory: Infrequent/Mild Cartoon or Fantasy Violence, Infrequent/Mild Mature/Suggestive Themes, Infrequent/Mild Alcohol, Tobacco, or Drug Use or References, Infrequent/Mild Profanity or Crude Humor
- Developer: Grumpy Rhino Games LTD
Last updated: 3rd December 2025 | Genre: Simulation, Roleplaying | Developer: Grumpy Rhino Games LTD