Last updated on December 17th, 2025 at 03:57 am
What the Luck?: CoOp Defense – Strategy Game Review
What the Luck?: CoOp Defense is a Strategy/Casual game from Crater Co., Ltd., first launched in 26th May 2024.
It’s rated 12+ and currently has 10,602+ ratings on the App Store.
What Makes What the Luck?: CoOp Defense Stand Out
How far can your luck take you? Have you tested your limits?
Introducing the ultimate luck-based tower defense game!
Try "What the Luck?" now and push your LUCK to the extreme!
- Summoning units is all based on LUCK! Beat the odds!
- Yes, it's a tower defense game! Defeat the monsters!
- You can also merge units! You just never know what you'll get!
- Feeling LUCKY? Take a big swing with the roulette!
To rise or to fall, LUCK is the question!
What the Luck? – A casual tower defense all about LUCK
This Strategy game offers engaging gameplay and regular updates for mobile players.
Player Feedback
As a newer release, What the Luck?: CoOp Defense is building its player community. Early feedback suggests .
Recent Updates & Development
Latest Update: 28th November 2025
Recent improvements include:
■ Fully equipped with Nano-Suit! [Immortal] I Am Meow!
- Mythic Guardian, Iron Meow Rework!
■ Black Friday Begins!
■ New Skin – Ninja Girl
■ Other Improvements & Bug Fixes
Download & Availability
What the Luck?: CoOp Defense is available through the official App Store for iOS devices.
Get What the Luck?: CoOp Defense 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:
This game is actually so fun to play in our free time and even though you can get lucky, its not only that, there is strategy in it too! Although, developers, it is a little hard to recommend this to friends when you keep changing the title. What the luck has the best name and loading screen right now, please do not change it again. One thing is that you guys need to chill with the pop-ups. The icons with little red dots is enough, having a giant thing on the screen you have to find the x for is just overkill. But other than that, we would definitely recommend! If they stop changing the title that is.
Issues were addressed shortly after this post. We only gave a 1 star so the developer could see the major issue that was happening. This is a great game. Game is really fun no problems there. The recent update is game breaking with major network issues and forced log out as if the game was deleted. Cant get past the loading screen because of server connection issues. We have ours bound to our apple account so we havent lost anything. But those on guest accounts are about to lose everything.
One of the best F2P games Ive played in a long time, optional buys with NO ADS!!!! 2X speed is worth the buy and maybe a starter pack for any newbies, play around before you upgrade any mythicals, dont waste upgrades.
Ton of content and perfect balancing, nice grind and guilds provide plenty of social interaction and teamwork.
Anyone elses game stop opening after the new update.
This game seemed cool at first but we can tell after spending $12 we get lucky way more often. And you guys can try and blame it on the 2x speed boost but it's literally not that at all. Wont be spending anymore money on it. And why do you guys keep changing the damn name of the game? Change it one last time to Pay for Luck and let it go.
This review is going to be a bit rambly, but Ill try to cover different aspects that stick out to us. Ill start with pluses. Ive been playing a few months and we think this is a pretty great co-op turret defense game. The randomization really breaks up the monotony you get after a while with more classic TD games. It also gets you to try out different play styles and strategies, which we appreciate. The premium currency is fairly easy to come by if youre active. They tend to give a good chunk with new events and then theres regular freebie opportunities with and without ads. We also tend to spend a little money on games we particularly enjoy (we try to budget around $25/month for games) and we think the 2 monthly vip options are pretty good deals too. Especially if youre repurchasing before the previous month is up, because its 30 days at a time and they usually give you a deal if you re-purchase before your last day is over. We prefer the more expensive one because it eliminates voluntary ads, but the cheaper one is solid if you want to get ahead. We really like the guild system too. There are different ways for guild members of differing levels to work together and get each other rewards (with 3 very different game modes within guilds to work together and a store to use those rewards to buy what you actually need) and you genuinely can progress further if you are in a decently active guild. We inherited the one we joined and we really like the group Ive been able to cultivate over the past 2 months. They arent all high level, but that doesnt hurt the group as much as it does in other games with guild systems. We also REALLY like the new adventure mode. Im not saying we want it to become the main game, but we prefer it to the challenge mode and hope Adventure mode becomes a regular feature. Our only big complaints are two things that we hope they fix at some point, but arent enough for us to drop the game down a star. First, we wish the guild system had a way to post announcements or share rules or something. (Like If you are inactive for 2 weeks, youll be ejected from the guild or even just Great job on the raid, everyone!). Second, the chat system is pretty abysmal. You can only say so many characters at once, which is often not enough for even a single sentence. Since people play all over the world, abbreviations can often mean some people cant understand whats being said and some words just dont have easy abbreviations. So we hope they set something up so we can say more than 5 or so words at a time. And be able to actually swap advice and such.
We enjoy playing the game Ive been playing for about 2 months but we have hit a point where Im making our guardians. So now pulling roulette-summons seems like a waste because all our guardian cards are extra we wish they would let them convert into something like gold or points to buy items with for instance every 10000 points you get 1 kitty treat something like that.
Download it right now it is fun to us because our friend showed it to us and we got hooked instantly even though sometimes when we try to login it just kicks us back out but that doesnt stop us from loving the game as much as we do thank you for the people who made this game because you change our gaming experience.
We love the game it definitely a 10/10 for us but can we get a master kun as an imortal.
Lots of new content, never gets boring.
We just love that this game doesnt force ads down your throat every 30 seconds like most games like it do. You only watch as much as you want, it doesnt lock upgrade stuff behind a paywall, and its easy to pick up and play for a bit.
Ace bat man is actually garbage no point in making him immortal it literally just makes him worse.
This game is way too fun where we actually got addicted to this game. We had to delete it for our own wellbeing, so be cautious.
This game is great Ive been playing for a couple months its really fun and different normally we quit games after a week but not this one this one is fun and adventurous the more you play the harder it gets having to grind a lot for next mode but its awesome truly a great game.
This is One of our favorite games ever. We love Playing this with our friends.
We honestly dont play any games on our phone anymore, but Ive been returning to this for months every day before bed.
Can yall lower the amount of bullets needed to Summon immortal roka, it takes hella long. Please.
We dont write reviews, but we are addicted to this game! To progress isnt impossible, but its not easy either. Only problem Im having at times is a lag out/match cancellation in the late rounds of a game. Its just a little bug that needs fixing. Cant wait to see what this update is about.
This game is good. But every to say Network Error .Connection to server unstable.Returning to intro screen. Yes our country is connection is so low but any games inside and paly.this game not inside why.we paly game pubg play is ok mlbb play is ok and every game play is ok but this game not ok.
Man we love this game. Its difficult but you can grind and earn your power. Paying always helps but you dont NEED to pay to win here. Only thing that could make this game better is a spectate button, we do wish we could watch our friends play matches sometimes. Other than that? GOLD. Good job guys.
The game is fun addicting entertaining and free to play no adds unless you use them for shop items amazing also link your account to google it rewards amazing game have fun.
LET'S GO GAMBLING! BST! ER! AW DANG IT! BST! ER! AW DANG IT! BST! ER! AW DANG IT! BST! ER! AW DANG IT! BST! ER! AW DANG IT! BST! ER! AW DANG IT! BST! ER! AW DANG IT! BST! ER! AW DANG IT.
We really do like this game and we hope the keep pushing out updates we have almost 100 hours on this game and its also f2p and the multiplayer is surprisingly really good and we really recommend you to play this game hopefully devs see this.
Personally im addicted to this game, great multiplayer, entertaining and fun. Maybe not right for everyone but we love it.
This game is great, Ive had a lot of fun and there is plenty of stuff to do. The beginning of the game is nice and progress is easy. Around level 12 you hit a kind of plateau where you start looking at the pay wall. ALL of the in app purchases are expensive, in comparison to a lot of other mobile games, we would like it if the in app purchases were cheaper. There is definitely a pay to win side of this game or you have to devote A-LOT of your time to it. The guild chat has a really low character limit so messaging your guild members is a pain. The guild has a ours and the amount of uses you get are limited and ONLY regenerates over time, itd be nice if you could buy or watch an ad to get more. Great game over all.
We love this game and Ive been playing it for quite some time now. Its truly a game of luck and mayyybe some skill. But jumping into PvP, felt like a 3 AM COD lobby. Im putting this account on blast because the things that were said were 100% not game appropriate. If this was a DEV account, shame on you.
Love the game; wish they would change the name back to just Lucky Defense. The game doesnt need the gimmick click bait names. Be proud of your product.
Now the game is fun and definitely had it longer than the typically 2-3 weeks. However considering the amount of characters maybe add more? We think the reworks make sense but then having more options entirely would make the game more interesting. And the characters get very VERY weak after about 40-50 rounds. Needs something that evens the odds when the game starts to feel impossible. Also should add an infinite mode and more main modes. Leveling up also seems a little slow and there should be more ways to get pet treats and other consumables. Honestly next update should really be a shift into something that does require just a tad bit of skill and the luck she seem more lucky. More characters, more background arenas, more everything. Might not play again until we see something just a little more worth playing.
We love this game and thats why its a 3 Star not a 1 Star, however theres a few quite annoying issues. The game likes to drop out, and thats usually fine and you can rejoin but many times it doesnt. You completely lose out on any and all rewards and then there are events where you need to win so many games in a row. When it happens you automatically fail because it counts you losing connection as a fail. Our most recent experience was the final jump of the event, we beat the game and then the connection dropped out. Spent then time to complete the match, but didnt get any rewards and lost out on the rewards for winning 5 in a row, simply due to the game losing connection. Notably this was not a us issue unless our internet was fine for all 80 levels and then when it goes to load the results is exactly when we lose connection and get booted. Please fix disconnection issues especially when its on the games end, we know in the Reddit this is regularly brought up as an issue.
At the beginning you get a huge rush of dopamine for free. As you progress in the game and get addicted to the dopamine rush the dynamics slowly shift until it turns into a milking machine. You wont be able to make any meaningful progress UNLESS you pay. And even then you have to pay big – $200-300 spent on this game is not uncommon at all. Its an amazing game. We only wish it was cheaper.
We had a very serious concern regarding the dragon. Unexpectedly the added a new updated regarding this concern. So our honest thanks to them.
We really enjoy this game but you guys should add a level up tier list into the game itself. And we like many others would probably benefit from a way to de level mythic heros from taking the wrong upgrade path from when they first started.
We like the defense intro better.
Level 13 playing with all lvl 19-22 like be real ?!?!? How am we expected to do anything to them, good game other wise but definitely need the pvp situation fixed if unrealistic to play with maxed out people when your highest lvl anything is lvl 10 and theres is maxed 15.
We really enjoy this game. Id love to leave a 5 star review. However Ive had constant issues when ever they release a new update. It doesnt seem that they test it for bugs and are in such a hurry to release the update that it gets sloppy and things go wrong. This latest is the most frustrating. It was a bug that sent a reward to your in game mail twice. We use to pay attention and read what every reward was for, but not anymore. So we opened them both. Now our account is restricted. Due to their own lack of thoroughness and the most frustrating part is, we cant even get in touch with anyone to straighten this out.
Ive played the game for awhile and enjoyed it ourselves. Spent money on it but now they wont even let us log back into our own account and want us to start over.
Skill based with some RNG and a little merge/gacha. Most of all thanks to the devs for not being degenerates, many in this space take advantage to coax users into an extremely expensive soul sucking grind fest with no regard for their users well-being. Keep up the good work and keep the well being of your users #1.
We think this game is great. Normally with mobile games we only play they for about a week. This game peaked our interest and the game is different every round. A feature we think should be added is an infinite mode. Playable in any difficulty with unlocking the next difficulty by completing luck based challenges but also skill based. It could also be added as an event only playable during the event. We think it would be fun either way, thought Id shoot out an idea.
Im not one to really jot reviews like that especially if its a phone game but this is one of the funnest games ive come across. Its very addictive and the rewards for the grind make it all worth it in the end. Theres constant updates and lots of fun ingame prompts that keep you wanting to play more. Love this devs good stuff.
We love this little game, and it is a fun game to play, but once you get through the normal mode the hard mode is way too difficult to pass. And after a while playing the normal mode over and over just gets really boring. We find ourselves turning back to this game over and over, but it is literally the same game every single time, with very little variation.we wish we could do more missions, and that the hard mode wasnt like IMPOSSIBLE, and that you did not have spend money to upgrade so much.
Except when you drain 40 coins straight trying to pull just an epic then its like remind us why we play this game again but nah and the devs havent gotten the greedy itch yet very reasonable prices.
Ive played this game for 2 years and we literally didnt pay a cent, and Im ngl really good. This game is super fun and we would recommend it to anyone who loves an exiting game.
We just found this game 1 years ago in instagram ad and still playing everyday.
We only got one mythic out of 900 draws.
This game has consistently entertained us. Has to be one of the games that we have kept in our phone for the longest and most active ones. Please can you activate all the mini pvp games more often tho. Love them.
Love the game pure RNGLuck all the way.
Our wife and we play this all the time, the game is worth paying a little money into every now and then for the added perks. Its worth the download to try out the ads are to a minimum.
Why not make a white tar vs that ugly brown? We seen the white tar at the top of the summer event vibin.
User feedback from Apple App Store
App Details
- Version: 1.8.2
- Size: 1,347.12 MB
- iOS: 15.0 or later
- Languages: EN, FR, DE, JA, KO, ZH, ES, ZH
- Content Advisory: Infrequent/Mild Simulated Gambling, Loot Boxes
- Developer: Crater Co., Ltd.
Last updated: 28th November 2025 | Genre: Strategy, Casual | Developer: Crater Co., Ltd.