Last updated on December 16th, 2025 at 02:54 am
SLIME – ISEKAI Memories – Simulation Game Review
SLIME – ISEKAI Memories is a Simulation/Roleplaying/Entertainment game from Bandai Namco Entertainment Inc., first launched in 27th October 2021.
It’s rated 12+ and currently has 30,702+ ratings on the App Store.
What Makes SLIME – ISEKAI Memories Stand Out
Enter the world of That Time I Got Reincarnated as a Slime in a new 3D battle RPG!
A new story supervised by Fuse, author of the original light novels! A mysterious girl named Shinsha appears, claiming to be Rimuru's daughter. What is her relation to Izis, the witch from the "mirror land"?
Relive famous moments from Season 1 of the anime in fully voiced cut scenes!
The star-studded vocal cast lend their talents to battle voices and interactions in town as well!
Use the nation-building system to create your ideal version of Tempest!
Build and position all sorts of buildings and facilities: your citizens' homes, restaurants, the blacksmith shop, the laboratory, magic-enhancing facilities, and more.
Walk through the town you've built and interact with your citizens to get a glimpse of their daily lives!
3D command-based battle system!
The controls are simple: just select the cards for your hand. But there's deep strategic gameplay to enjoy as you learn to effectively use abilities drawn from the original work! Enjoy dazzling finishing move animations that will make you feel like you've stepped into the anime!
Bandai Namco Entertainment Inc. Website:
https://bandainamcoent.co.jp/english/
[Caretaker's Crate Monthly Pass][Tempest's Treasure Monthly Pass][Tome of Wisdom Monthly Pass] Each pass is an automatically renewed paid monthly service that gives various items.
Players can try the service for the first month free of charge.
◆Caution
・This service is a paid service that automatically renews each month. Automatic renewal activates 1 month after purchasing the service.
・The first month of the service is a free trial, after which the service and its expiry period will automatically itself renew each month. Your Apple account will be charged monthly until you deactivate the service.
・Please be warned that even if you delete the app, unless you deactivate the service's automatic renewal process, said process will continue to renew itself.
・If you purchase this service multiple times using different Apple IDs, you will not receive duplicate rewards. Furthermore, requests for cancellation of payments relating to multiple/duplicate subscriptions will not be accepted.
■About Payment, Service Periods, and Renewals
・Payment for this service will be tied to your Apple ID and will occur immediately after joining.
・Players who do not cancel their subscription to this service 24 hours or more before its expiry period will automatically have their expiry period renewed.
・Expiry periods are automatically renewed within 24 hours of the expiry date. Players will be charged when the expiry period has automatically renewed.
■About Cancellation
・This service must be canceled more than 24 hours before the service's renewal date.
・Players can cancel their subscription to this service using the following steps.
- Open "Settings" – "iTunes Store and App Store" – Tap "Apple ID"
- "View Apple ID" – Tap "Register"
- This screen will display content you are subscribed to. Select "Cancel registration"
・Please be aware that your subscription to this service will not be terminated by deleting the app.
・You can continue to enjoy the content of this service until the expiry period even after canceling your subscription.
■Other Warnings
・Please refrain from closing the app while payment is processing as this can potentially cause issues with your access to this service.
By downloading or installing this app, you agree to the Bandai Namco Entertainment Terms of Service.
Terms of Service:
https://legal.bandainamcoent.co.jp/terms/
Privacy Policy:
https://legal.bandainamcoent.co.jp/privacy/
Note:
This game contains some items available for in-app purchase that can enhance gameplay and speed up your progress. In-app purchases can be disabled in your device settings, see https://support.apple.com/en-us/HT201304 for more details.
This application is distributed under the official rights from the license holder.
This Simulation game offers engaging gameplay and regular updates for mobile players.
Player Feedback
As a newer release, SLIME – ISEKAI Memories is building its player community. Early feedback suggests .
Recent Updates & Development
Latest Update: 3rd December 2025
Recent improvements include:
ver3.0.35
Fixed a few bugs.
Download & Availability
SLIME – ISEKAI Memories is available through the official App Store for iOS devices.
Get SLIME – ISEKAI Memories 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:
Ive watched the show several times we were so glad when we found this games and we love it great game.
This game is really good its easy to grind its just good overall but the only thing that we dislike about it is that no matter what we do it crashes on us after a certain amount of time Ive been trying to do this one quest and whenever we tap on it the game crashes and its like that with most of the features as well.
We have been playing this game since it came out. We can say we are a bit bias because we are a huge fan of the anime, but we truly enjoy the game. One caveat we are also a free to play player beside first month or two when game came out, after that all free. So many years later and we are still enjoying the game.
This game is amazing and we fell in love with it from the get go, our only request would have to be increasing the odds and event specific character recruits because we have done around 100 of them and havent gotten anything good.
Our game crashes every time we try to do the special missions. Im on the iPhone XS Max so idk if its cuz our phone is old or what. We do know its super frustrating. Every time the game updates we crash even more.
Game is buggy and needs to be dealt with! Besides that the game would be great.
Its a good game but when are u gonna fix the bugs that makes it crash on you 24/7.
We have been playing this game since the game first came out and we dropped money on it but we can log in because we didnt get the account number and password and its really making us mad so Bandai help us out.
Everything we do crashes the game every single time.
Love what they have done with the updates. Love the new slick design of the app.
The review is you need to be able to change all the languages into English or have a setting where it changes all the language languages into whatever language somebody downloads it into and Im wondering when the maintenance is done because this is our number one favorite app and our daughter she plays it too.
We know these type of games are PTW but this game is a good time killer but it crashes almost every 30 minutes so Im good on it.
So we actually liked the game, it was fun, had lots of events going on and a decent amount of crystals given through the events. We have zero complaints about any of that. Our biggest issue and what made us delete the game, is how the character draws are handled using the crystals. The Crystals are the ones you have to play the game for or purchase. The prices to buy Crystals is outrageously HIGH. 25$ per 10 character draw. This comes into the heart of our issue. You spend money and work through their events only for the vast majority of the characters you receive are Silver (lowest characters). It seems like you only have a chance of getting an actual usable character 1 out every 3 Crystal Draws. So you spend 20$ and a Ill get NOTHING for it This has happened to us so many times, we are just giving up and deleting the game.
We love the TenSura series and the game has been faithful to the series, and has even had some fun and interesting collaboration events with other IPs such as Overlord and Frieren. But the main problem with this game is that it crashes frequently. Any load screen, any interaction, the beginning of a battle, anything can make it crash and force you to go through the tedious login process all over again. We swear half our time playing this game is spent logging back in after a crash. Seriously please do something about this and fix this game! Its easily a five star game but the crashes are a major headache.
Honestly we love this game , love the animation too but game tends to crash here and there , it even crashed when we clicked to recruit characters which left us with nothing but honestly we still recommend the game if your reading this , its pretty fun.
Game is a lot of fun but would like controller support for exploring the town.
We love this anime series, so when we solve this in the App Store, we knew we needed to download it. We were a little nervous, reading all of the reviews, saying it crashes all the time. However, most of those reviews gave it four stars or higher. There is definitely awesome potential to be a fantastic game, but the constant crashes make it impossible to play. So as youre reading this and all the other reviews, know, and expect a ton of crashes.
We join this game and we battle we keep getting kicked out like we did nothing please developers you need to fix this bugs if you do, Ill be so happy.
We loved this game a lot but fell off of it for a while and after our phone offloaded the game we lost all our save data and now that Im playing it again it crashes without fail every 10-15 min, it really makes it difficult to enjoy. Theres so much do in this game so youll constantly be entertained but only if you can put up with the frequent crashing.
We have been playing lot of phone games like this but this is a real game lol do t even need to spent $$$ just keep on doing what you have to do and they will reward you. Graphics are great but we wish it was more adult friendly lol.
Would give you a 5 stars if not that after every fight or after 20-25 minutes the game would crash we play on we phone 11.
Love the game and am a diehard fan of this series. However, the game crashes during summons and battles make it hard to become engaged in the game. Bandai, please fix this. That is all.
We really like this game. Good graphics and style. Our problem is that the game crashes easily and a lot of those times are happening when Im recurring and we lose our tickets.
We love this game, we just wish that you could sign in, in a more casual way, like email/gmail or apple, and that it doesnt randomly kick us out, not sure if its just our phone, or if its the app but we were playing and got kicked out four times in a row.
We love the game and its decent graphics for the type of game it is has TOO MANY glitches and bugs like we cant even access our other types of troops but dark without going into arena so that makes events EVEN HARDER to guess which characters give the best drop buffs.
We love the game we play it almost daily. The only thing is the game frequently crashes and shuts us out causing us to have to reopen it but other than that its super fun to play.
We absolutely love this game. Theres so much to do, plenty of events and quests and everything and its so satisfying to get new cool characters. But we have one problem, and that is the fact that the game crashes every 10 minutes when we try to play it. It gets stuck loading in battles and in the gatcha, and it make us sad :( BUT it is worth it and this may not be much of a problem on higher quality devices so if youre looking for a cool game, this is the game for you.
Only thing not making this a 5 star review is their joke of balancing events. Returned after 2 years, have a decent roster. Played long enough to have two octagram bazaar characters (prot Rimuru and dark magic Luminis) and a couple upgrades for them. Was top 100 for the stuff at the time. Not much different; just a wallet/new character check for bigger numbers to meet mandatory values for 80% of the events. The quit moment for us years ago was event related, same thing this time, just way faster. Their design philosophy hasnt changed in that regard. Id hoped that changed. Event stuff brings new buildings to push your population growth, and higher population = higher max level of stat boosting facilities. If you are new to the game or are coming back to it after a long time, dont bother. Wonderful IP and game, but the balancing is a joke. No amount of half timed building is gonna catch you up. Parallel processing (basically a required auto complete farm tool) is a pain to unlock for events. It should just be unlocked upon completion of the level. They get progressively more impossible to unlock as you go up. Currently requires all challenges to be beaten. Said challenge is usually an outlandish dps check, the reason we quit years ago. Yes, you can use it on low levels but its an exponential loss on not only stamina use vs. Loot return but your own effective time as well. Ill hopefully save others time by writing this. If its your kick, go waste your time. We prefer something obtainable this century.
As soon as we started playing this game, we were completely captivated by it the graphics the characters and the boss fights. All of it is just simply wonderful.
Dont get us wrong we love this game. But any time we talk to one person in our village our game crashes, or when Im doing the PVP we get one battle done and start a second only for it to crash. And the loop tower just wont load at all. We hear the music for it, but our screen is black and the loading bar is freaking out to know end.
Captivated our attention to focus on the game, the mechanic gameplay is enjoyable, the way you can utilize the characters to actually mix a great combination for stories and event is exceptional, the only problem we encounter is the random closing on the app, doesnt take away from how great the game is, wish it could be resolve in the future.
Can you please make a setting where you can have the audio.
All in one game crisp graphics and good story except glitches and the same glitch happen to us when recruiting.
Fun game, great if you love the show – but frequently crashes. Please fix.
Amazing love how they made the game been playing for a few years now and fav collab was the overlord one.
Highly recommend for anyone whos a fan of the anime/manga That Time we Got Reincarnated as a Slime. Turn-based combat is actually strategic. The characters you deploy in combat make a HUGE difference, and different enemies provide unique puzzles to solve using different characters and different tactics with their move sets. We found it fun to revisit the original manga/anime storyline, to see the characters in new and different settings, and to see different mini stories/events. Theyre kind of like OVA/mini filler episodes in their own right. Theres a unique long-running narrative story, too. We even found designing the town fun, and there are secret rewards for specific configurations. Yes its gacha, and there is power creep, but it is TOTALLY possible to be free to play and still do very very well, because its all about the strategy and tactics, not just pay to win.
We were doing something we dont remember what and then our progress was gone we think we were around chapter 10 we think the money we spent was $100 if we remember.
We are loving this game so far, we just downloaded it and have been playing for HOURS. But our only issue at the moment is that whenever we try to level up our buildings or build new things we get kicked off to the main screen. Its not that big of an issue, its just kinda annoying to keep dealing with. Other than that, the game is literally amazing.
Its a good game, really, BUT IT WONT STOP CRASHING. We cant do anything without the game closing itself out.
Make sure to save your data or youll lose everything. Thats all we have to say.
Game keeps crashing needs to be fixed now great game though but needs to be all fixed so game wouldnt keep on crashing please fix this issue.
If it werent for the fact we love to collect collab characters we wouldnt be playing this game, when we say we surely have crashed to a point it has reached triple digits in the span of the whole Frieren event we are not exaggerating, throughout the entire event it has crashed over everything, opening packs, npc quests, battles, literally every feature and mechanic has made it crash as if this game is behind held together by strings or perhaps make the screen remain pitch black forcing us to close and restart it. Fix your broken game.
We love this game so much. Its got cool graphics, fun battles. Stuff like that. But sometimes ( this may just be us) when Im trying to recruit people the entire app just shuts us out! And when we open the app again its already recruited our operators. So we just think oh dang. We didnt get to see the cool little scene for our rare 5 star operator every thing other than that we love. We absolutely recommend.
We love playing this game but it keeps force closing at random times.
This game just cant function on mobile even though its a mobile game. We swear everything causes it to crash, especially the home function. And since the home function is forced onto the player for literally 80% of the content outside of battles the game crashes all the time. You cant avoid the home function at all. Its literally the first place the game goes to when you open it and even just that causes it to crash immediately. If it wasnt for that and the god awful gacha rates this would actually be a decent game.
The games not bad thats for sure, the only issue we have is that the game takes up too much storage and keeps kicking us out every few minutes. We know this might be a us problem if it takes up to much storage but it doesnt even work when we delete even all our games and images.
The game is cool but its not canon, right.
Its so good graphics good auto battle free stuff o that game is better then geometry Dash.
This is a great game just the spinning system is not reliable at times and this time they give us what we wanted.
User feedback from Apple App Store
App Details
- Version: 3.0.35
- Size: 3,805.40 MB
- iOS: 13.0 or later
- Languages: EN, FR, KO, ZH
- Content Advisory: Infrequent/Mild Sexual Content and Nudity, Infrequent/Mild Cartoon or Fantasy Violence, Loot Boxes
- Developer: Bandai Namco Entertainment Inc.
Last updated: 3rd December 2025 | Genre: Simulation, Roleplaying | Developer: Bandai Namco Entertainment Inc.