What happens when you mix Tetris with cats? You get Catris: a fur-midable puzzle game where every falling piece is an adorable (and slightly uncooperative) kitty.
\nStack the colorful cats into perfect lines to clear space, but watch out for the mysterious black cats. They’re not here to help. They have minds of their own! Some are too stubborn to move, others refuse to rotate no matter how much you ask, and a few are so impatient they drop straight to the bottom before you can even blink.
\nEvery meow-ment counts as the board fills up faster than a cardboard box at a cat café. You’ll need quick paws, clever thinking, and a good sense of humor to survive the chaos.
\nWill you tame the feline frenzy, or will the black cats bring you purr-mature game over?
\n","source":"thiagorb/js13k2025","stars":0,"comments":[{"at":410336241,"author":"Alexander Petrov","login":"baturinsky","gh":632779,"twitter":"baturinsky","text":"Interesting twist on Tetris. Black pieces make it maybe a little too hard, so some tweaks to make it compensate could be great.
\nAt least, you could use the algorithm of the piece selection which give more diverse pieces - suchs as the original nes tetris one https://www.reddit.com/r/Tetris/comments/6o6tvv/what_is_the_block_algorithm_for_classic_tetris
\nAlso, update your git source, it is month old.
\n","games":["All you have to do is Dream"]},{"at":410353916,"author":"F肯尼","login":"kennyfully881230","gh":208875314,"text":"I like this game very much and I like how it adds condiational rules! That’s great!
\n","games":["Heimao"]},{"at":410369915,"author":"John Stimac","login":"jcubed111","gh":14258407,"url":"jstimac.com","text":"The cats are really cute! Making every peace look like a cat is adorable.
\nI wish it had been a little bit more different from base tetris; the additional rules for the black cat pieces was fun, but they appear so sparingly. I’m also not sure about the “hard drop” cats, those felt a little unfair.
\n","games":["Mewnbeams Adventure"]},{"at":410485248,"author":"Andrew Higson-Smith","login":"ElementalSystems","gh":4255763,"url":"www.elementalsystems.co.za","text":"Cats peices are cute - changes to the rules are interesting but all very similar. Nice clean implementation - good work.
\n","games":["Wake the Cat"]},{"at":410487061,"author":"Rob Louie","login":"roblouie","gh":5448110,"url":"roblouie.com","twitter":"rob_louie","text":"Love the cat tetris pieces! And the black cat idea is a cool twist. Other than a lack of sound, my only real complaint is the controls. At least in the original Tetris, the buttons rotated the piece, and pressing down moved them down faster. Here up and down rotate the piece and pressing a button puts them down instantly. This messed me up multiple times as I went to press a button to rotate the piece…and it snapped to the bottom. So I felt like I was playing tetris with opposite controls, which just wasn’t intuitive. Maybe newer version of tetris have changed this? If so I’ve never played those versions I guess.
\n","games":["Whiskers Witch Adventure"]},{"at":410501493,"author":"Himanshu Bisht","login":"igamerx","gh":44287861,"text":"Nice take on Tetris, the black cat really got me. The graphics are cute, I really like the style. I feel if you add some juice and effect, it can take the experience to the next level. Well done.
\n","games":["The Ninefold Gambit"]},{"at":410512495,"author":"xem","login":"xem","gh":1225909,"text":"Nice twist on the original Tetris game featuring cat’ uncooperativeness. Cute. You should have used the extra free kbs to add sound!
\n","games":["I got up on the wrong foot"]},{"at":410557760,"author":"Anthony Cosgrave","login":"anthonycosgrave","gh":1410114,"url":"https://imtoospexy.com/","text":"That might be the hardest 1930 points I’ve ever scored. Damn those black cats! I really like the art style and twist on Tetris. Some sound would definitely add a little extra to the experience.
\n","games":["Chickpocalypse Meow"]},{"at":410588610,"author":"Jasper Renow-Clarke","login":"picosonic","gh":26137750,"twitter":"femtosonic","text":"Wow what looked like a pretty traditional tetris game but styled with cats in mind turned out to be a mind bending puzzle with forced restrictions, like the no rotate, no move, hard drop, e.t.c.
\nA well put together game, lots of fun
\n","games":["Mochi and the midnight escape"]},{"at":410607764,"author":"Andy Sommerville","login":"aksommerville","gh":1869768,"url":"http://aksommerville.com","text":"Very nice! I wish there were audio and a counter-clockwise rotate key.
\n","games":["Nine Lives"]},{"at":410689067,"author":"Francesco Bedussi","login":"fbedussi","gh":9413715,"url":"http://www.francescobedussi.it","text":"A nice twist on a great classic. Very cute and polished graphics.
\n","games":["Superstition: The Black Cat Game"]},{"at":410744049,"author":"Zang0l0tino","login":"Zang0l0tino","gh":167128079,"text":"Nice game, I feel like you could have added some audio to the gale though, and maybe a key to rotate counterclockwise. That aside, the game is rather fun, so congratulations!
\n","games":["The Black Cat's Escape"]},{"at":410755681,"author":"Daivan Trinh","login":"daivan","gh":1457778,"text":"Its Tetris fully working with a twist, some blocks cant be turned and some just fall straight down.
\nI not the biggest fan of tetris but its cool that you made it work with only 8kb!
\nGreat work!
\n","games":["Run from the Black Cat"]},{"at":410773672,"author":"Elias Ku","login":"eliasku","gh":3038174,"url":"https://eliasku.win","twitter":"eliaskuvoice","text":"A very well-implemented classic Tetris with a great twist - the black cat adds a fun layer of challenge. The visuals are beautiful and stylish.
\nMy main suggestion would be to add sound effects and music; it would really complete the experience.
\nOverall, very polished and enjoyable. Nostalgic pleasure! Great work!
\n","games":["Cat Survivors"]},{"at":410838826,"author":"Ryan Tyler","login":"tyler6699","gh":50468,"url":"https://carelesslabs.co.uk","text":"Nice tetris game, add music for the full tetris experience!
\n","games":["Yarn Run"]},{"at":410889457,"author":"smhaaker","login":"smhaaker","gh":10542292,"text":"Nice Tetris clone. The cat / block graphics are adorable. Would love some sound though. Good job.
\n","games":["CatNFish"]},{"at":410961956,"author":"Jonathan Vallet","login":"jonathan-vallet","gh":5329099,"text":"🧩 Nice twist on Tetris, with black cats imposing malus blocks. It reminded me a bit of Tetris multiplayer on the Game Boy!
\n","games":["Witchcat"]},{"typ":2,"at":411112287,"author":"Ania Kubów","login":"kubowania","gh":51362610,"url":"javascriptgames.online","twitter":"ania_kubow","text":"What a cute twist on a classic grid based game! It would be great if you could add cat like sound effects and music to really complete the cat takeover on Tetris.
\nI also enjoyed how you deviated from the original Tetris game play with the black cats. This kept to the theme and the superstitious connotations that go with them.
\nWell done!
\n"},{"typ":2,"at":411468334,"author":"Victor Debone","login":"debone","gh":763457,"url":"https://javascri.pl/","twitter":"javascripl","text":"Thanks for your submission! It may be “just tetris” but implementing “just tetris”, on a 13kb budget, in a month, with the quality you have achieved here, and still added some twists is no simple feat, congratulations!
\nYou covered it all – the scoring, the next piece, the down and space keys, rotation and allowing pieces to slip before settling.
\nI really enjoyed the twist you added. It felt very much on the theme and it fit into the tetris gameplay. I’m not good with tetris, and the black cats made it absolutely clear.
\n"},{"at":412031436,"author":"Attila Horváth","login":"attilahorvath","gh":4081005,"text":"Very cute game! At first I thought it would be just a straightforward Tetris clone but then the black pieces really caught me off guard and nicely change up the formula, well done!
\nI love the cat faces on the pieces, with their slightly bothered expressions, very fun! Also, the funny names in the scoreboard.
\nSome basic sound effects would’ve rounded out the experience as you still had some space left in the package.
\nGood job overall!
\n","games":["A Voiding Your Problems"]}],"results":{"theme":{"rank":100,"min":1,"score":2.9,"max":4.24},"innovation":{"rank":110,"min":1.2,"score":2.52,"max":4.03},"gameplay":{"rank":41,"min":1.18,"score":3.29,"max":4.37},"graphics":{"rank":53,"min":1.6,"score":3.45,"max":4.56},"controls":{"rank":47,"min":1.6,"score":3.48,"max":4.45},"primary":{"rank":105,"min":8.68,"score":15.65,"max":24.89},"label":"Overall"}}