A downloadable game for Windows


Users are clan leaders for a small rat post, they will defend your rats from predators and monstrous creatures. User’s main goal is to build the largest ‘Ratropolis!’ Make your rats talk about it for a thousand years.

In the game, a player can choose 80 cards consisting of resources, armed units, construction, and combat support to activate strategic command. User will be given 8 basic cards at the start. User will then re-draw used cards from the card pool. Building an efficient card deck is key to protecting your rats from waves of strong enemies. Other than obtaining new cards, a user can also upgrade or remove cards from the card pool to create their own deck.

Defending your rats in the city will be a challenge. Select an adviser with a talent in finance, defense or leadership. They will provide better options when a player encounters chaos in the city. As the city falls, the campaign will end, but at the same time new cards will become unlocked and expand a player’s card pool based on stage completion. Make each defense a new experience with the addition of new cards.

Survivor rats expect you to lead them in the new outpost. Build your history and ‘Ratropolis’ by playing cards strategically!


Unique game concepts:

- Time is also a resource. Real-time deck building card game.

- Cute rats are protagonists instead of feral cats.

Very addictive gameplay:

- A game that is easy to play but difficult to master.

- Highly engaging game that requires quick judgment and response from players.

- Various random elements give a new experience to users every round.

- Short play time makes gaming experience more intense, and unlockable elements make players stronger after every play.

Various game contents:

- More than 80 unique cards

- More than 30 events to check out the story of rats

- Choose your own adventure! 6 different possible endings.

- 4 different leaders! Each with their own style and traits.

Add to your Steam wishlist:


StatusIn development
Rated 4.6 out of 5 stars
(35 total ratings)
GenreCard Game, Simulation
Tags2D, Casual, Deck Building, defense, Real time strategy, Roguelike, Tactical


Ratropolis_Demo_v1.4(ENG).zip 141 MB
Ratropolis_Demo_v1.4(KOR).zip 141 MB

Install instructions

Only run on Window 7, 8, 10 (64-bits)


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Bloody hell yeah.


Hello Casselwolf,

I found your game in a video on the splattercatgaming YouTube channel. But I wasn't sure if I wanted it. It stayed in the back of my mind  for months.

Then I stumbled across this demo. I ended up playing the demo for hours! Loved the game. And just bought it off of steam. Thanks for making and sharing the game. :D

Deleted post

hope you enjoy it :)

could i get sauce on the desert level's soundtrack? that song bops.

Is there a way to contact you guys to get a key to play on youtube? Just curious (If not i'll just buy it) been trying to find your website. Thanks so much!

DDP에 전시되어 있는 것과 같은 최신 버전은 안올라오나요?

Can I have a Newest version in like a DDP?

DDP에 올라간 버전은 전시목적의 최신버전이라 데모버전 이외에는 올라가지 않습니다. 하지만 11월1일 출시라 곧 최신버전 즐기실 수 있을것 같아요

바로 구매해서 즐겨보도록 하겠습니다!
내일 나오는 거 맞지요? ㅎㅎㅎㅎ 기대가 됩니다

Great game so far.

I did notice some weirdness when trying to upgrade a honey card. It showed up as +50 card which seems a bit excessive and when instead of honey being upgraded it upgraded a guard instead.

Also during upgrading Potter showed as +40 gold per card when upgraded while it only is +20.

Now to beat that lvl 15 wave.

I think it's a bug. Thank you so much for the report! I'll fix it.

I am having issues getting to wave 15 with trader leader. Populations is a big issue with the game. Even with getting houses on every treasure chest isnt enough to make a sizable attack force with a few rats to boost my money through economy cards.

This may be countered by the slums quest card.

Also maybe countered with the use of skill cards.

If anybody has found a more guaranteed route for the trader I would love to hear it.

For the demo version, 15 wave is last wave. It's limited so you can't break it on purpose.
In the Early Access version, more cards are added to increase the population!

This is such an amazing game! I've been playing for hours since I was introduced to it and can't wait for the early access to drop on Steam. The card building aspect is well thought out with lots of different cards that should inspire different game plays with different strategies. I hope there might be some sort of custom function that I could adjust how fast the waves were because I would like to test out situations with the many combinations of cards. Overall one of the most interesting takes on a deck-building game that has managed to captivate me and makes me want more. Keep up the awesome work and I look forward to the full game one day knowing that it will be great!

All right!! I'll think about systems that can speed up the wave time!
I'm so happy that you played happily.

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Got to the last wave but only just 1 times ... there still need a balance to be made here and there.... the enemy is just too powerful... that just the normal one .... ones the plague event hit up .... normal enemy become hell .... so hard to beat... should need an pdate that can upgrade our existing wall .... rather than need to expand.... because every soilder left and right need to be balance with their power and defends ... if one broke out trying to get the left to go right or vice versa is really hard if you dont get that rally .... 

I think that it should also be that a wall shouldn't be a checkpoint/stand for the soilder to move left & right .... the last wave when i want to defend the left side.... but the last left wall broke .... my right army should be able to defend it but since there no wall ... they cant move to the left to defend it and make me lose just like that .... 

I wish there have like a map on top ... so that we can easily click left and right on the map to go to that other side of each wall ... for an easier defend strategy when using our skill

Really Love the game .. excited to see the update of the game.

Thank you very much for sharing your experience and leaving feedback. 
Modification is difficult right now, but I'll take the time to think about it.

I've gotten to wave 16 three times. Just stalling wave 15 long enough for wave 16 to spawn :P

I'm sorry to limit you to 15 waves, but you've made it.

first bug after 79  game

79 games! It's amazing !
I'll try to solve your bug report. 

yes i really love your game, i need the game now^^ i hope  one update for the demo. if you want give me the game for my birthday the 2 november lol :) good job

i can't wait for the beta, all day i look for update of alpha, this game is really amazing, one of best game i have ever played with ksp. i want buy him now guys! or please upload new version of this alpha, i think i'm gonna to make my first and all my stream on this game, very good work on this game, my best score 271!

Thank you so much for your enthusiasm!
The Early Access version will be released soon. I hope you enjoy the game.

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wow, the 15th wave is destructive but

but I finally managed to reach the 16th wave ! :D

Has anyone managed to do better?  ^^

This game is awesome, you did a good job and I have only one thing to say: strongly its official release! :)

You're really amazing. 
Thank you very much for playing, and I will try to give you a fun game as you expected.

This was great! I got really drawn into this as I love RTS and Card games, it reminded me of Kingdom. There were many more cards than I expected and a lot of them felt pretty good (Still didn't stop me from dying to weasels!) Great job on the game!


Thank you for recording the video! Even though it's the first play, you've reached far away Wave. It was a video that showed your RTS game skills.

Thanks! I was having such a great time with it, glad to know I was actually doing well.

I really enjoyed the game!
Quite challenging, but fun nonetheless. 

The one thing I found a bit annoying, was that once the inner walls were destroyed, it was basically game over as you couldn't place any cards to defend yourself. Other than that, looking forward to what the game has in store for the future!

I also made a short video about my experience playing the game, feel free to use it to promote the game in any way.

Thank you for recording the video! I enjoyed watching the video.
When enemy broke to the inner wall, I thought it was pointless to stop it. Even if you defend it, you'll soon be stronger and more enemies.

But I am aware that many users want to do something more in the situation, and I am planning to add something to relieve that desire!
Thank you for your feedback!

I played the game a bit further after recording and got to the final wave (I believe) and the game is lots of fun!
But it is indeed difficult once the inner wall is broken, especially the last wave, as the enemy is so strong and fast.

I'm looking forward to more though, good luck with the game!

(2 edits)

If I have waves coming on both the left and the right side of the city how do I manage my army? I mean can I split it somehow or is it just all left/all right? Or do I need to put cards both on the left and on the right side evenly so when this happens it's ok?


- please let me change the space bar function. In many games it's a pause button and I keep on discard my hand by mistake ;D

You have to deploy a left/right military unit to prevent such a situation. Or you can put a military unit on one side and defend the other with a building or a skill card that damages the enemy.

I'm planning to add a custom key setting later. You'll be able to enjoy the game in a comfortable way.

Cool idea and quite the challenge with the later enemies. Can't wait for the release. :)


Thank you very much for playing, and I will try to give you a fun game as you expected!!

I wanna download this game! I'm lovin it!

I love your reaction!!

me also i can't wait

Hello i discover your game on the youtube chanel of Dan Field and i really want to test it on live on my twitch chanel i'm a very small french streamer but i wanted to ask if it was ok for you if i stream your game ?

Of course! It's a great honor for me!
I hope your streaming goes well!

Ok thanks I was almost sure, it was ok but I preferred ask before ^^

This game is ridiculously addictive and I have loved playing this demo. Fantastic job.

Thank you for playing. I love the word "addictive."

Oh addictive is an understatement. I still can't beat the last wave and I have tried many times. I freaken love it.

One exploit that I would like to point out, if you build two upgraded altars you can use them to completely stop the waves, and then you can have all the time you want, assuming that you constantly make sacrifices, Aztec style.

It's a way of playing games, but it seems to be too efficient. The balance of the altar will be adjusted.

Hello i got a real problem , i restart game because he crashed and i lose all my save :( Idk if it's because it's demo or not

I'm sorry about that. I'll find the cause of the problem and try to solve it. 

Just discovered a new area, and it's astonishing:

I love the game! Just one exploit I would like to point out, if you are using the military leader and you use rally in combination with his active ability, you can get absurdly powerful units, I had units in the 90s on health and 30s on damage by the time the wave 15 demo end killed me.

Thank you for your feedback. We feel that the general's active ability and rally card need to be balanced too.

Had a lot of fun in this game, hope you all enjoy the game play video! 

Thank you for playing. I enjoyed the video!

An excellent, gripping game that glued me to the chair for several hours.  The graphics are enjoyable, the special effects are great, the random events add to the replayability value, and the game requires serious tactical thinking - managing your resources in a balanced way is the key to success, as is playing your cards in the correct order and using combos.

Anyways, I managed to survive until wave 15 and got close to restoring the city of Ratropolis to its former glory, before succumbing to the inevitable doom.

Also, regarding bugs, you apparently overlooked that achievements in the English version are untranslated from Chinese.

Your reply is really literary and wonderful. Thank you for playing.

poorly balanced...

Super cool concept! Really enjoyed it! Kinda got annihilated once the weasles attacked. Not really too sure how I could have turned that around aside from more units. Made a video, hope you enjoy! 

LOL It was really fun to watch your video. Thank you so much for playing my game and filming the video.
Weasels are really really scary...

Amazing demo guys, I played it for about 3 hours and added  it to my Steam wishlist. Ratropolis is a game I would buy.

I also featured the game on my blog, you can read it here: https://www.lostnoob.com/previews/ratropolis/

Thank you for your wonderful writing! I read the article, but I forgot to reply by mail. I'm sorry.
Watching the post about my game is really touching and motivates me to make a good game!

Thanks! Just some feedback:

- The cards that can completely change the strategy when you draw them are great. For example I liked Slums: with it you can have tons of units, but need to find ways to get income because tax will become 0.

- One thing I wasn't sure about as a PC player was the gold mine card. Need to click a lot and fast, not good for the hand with the mouse.

- It took me a bit of time to understand the Advisors system.

- For replay value after you complete the campaign, consider adding an endless mode where you are sure to die but try to beat old records, it would work well with the statistics. For example all enemy get +20% health after round 40, all enemy get +15% dmg after round 45...

- Another idea for replay value is adding random modifiers, see https://slay-the-spire.fandom.com/wiki/Ascension

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Wow! You have a pretty good skill!
Thank you for having fun!

Hi, this game looks awsome. But i'm on linux machine. Is there any plan to release a Linux version?

Linux version is not supported at this time. I'll find a way to apply.
I plan to support Linux and MacOS in the early access version.

(1 edit)

thank you, looking forward to it! keep it up!

Wow, that was a fun game. I was a bit addicted until I level capped. I can't go past wave 15. Those weasels or whatever have a healer!

Level 15 is the demo wipe.  You're not intended to beat it in the demo version.

You're in the top 20% if you've gone up to 15 waves.

🧀🧀🧀 very cute! I don't like card games, but this one takes the cheesecake. Super cheesy, I'm sorry.

Good game, proud of you <3

Cheese is the only one. 

Fantastic Game! I'm go recording in YT!

Thank you! I hope you get a lot of views.

You make more games?

It's still only the Ratropolis.

I plan to focus on the success of Ratropolis.

Sorry i'm have Polish channel in YT:

watching the GIF and pic, my mind say "this game is amazing" to me

after watching the trailer "WOW that game is EPIC"

downloading now

Thank you for your kind comment! 

i never thought it will be in itch. you had my request on keymailer :)

wave 13/30 and i lost my city