Indie cat-creation roguelike Mewgenics is celebrating more than scientific breakthroughs. The tactical cat-breeding RPG from Edmund McMillen and Tyler Glaiel (The Binding of Isaac) is shattering sales records with more than 1 million copies sold after just one week on digital game retailer Steam.
Game designer Tyler Glaiel revealed the million-unit milestone with a celebratory image post on Bluesky. The post depicts the game’s Mad Scientist character laughing maniacally (as Mad Scientists tend to do), the text reading, “ONE MEWLLION COPIES SOLD!!!” Alongside the image and added artist credit, Glaiel shares a succinct statement — “meow” — and, frankly, that says it all.
Given its current success, Mewgenics could set even more sales records. We’re now nine days removed from the game’s launch, and current Gamalytic stats show Mewgenics has sold more than 1.5 million copies. This means that, in the 48 hours since passing the 1-million mark, Mewgenics has moved an additional 500,000 copies. With a retail price of $29.99, Gamalytic estimates total revenue of nearly $37 million.
About ‘Mewgenics’
Mewgenics‘ Steam listing asks the hard-hitting questions: “What if you could breed the perfect army of whiskered warriors, then send them on tactical adventures in search of food, money and loads of treasure?” In Mewgenics, players and Punnett square proponents explore Boon County, where they’ll “assemble a team from [their] ever-growing house and outfit [their] cats with class-specific collars (Fighter, Tank, Mage, and many more).” Once their felines are finely-tuned, gamers send their squad “clawing through adventures of turn-based battles that demand careful positioning, wild power combos, and environmental shenanigans.”
The game’s record-breaking run started strong; Mewgenics made back its near-decade development budget after only three hours, and surpassed 150,000 sales in six. “half a million units sold in 36 hours,” according to Glaiel’s declarative Bluesky post on February 11.
Four days later, Glaiel revealed that Mewgenics had eclipsed the concurrent player peak record previously set by indie blockbuster and frequent 2025 Game of the Year nominee Hades II. According to Steam data aggregator SteamDB, Mewgenics hit an all-time player peak of 115,428. Comparatively, Hades II peaked at 112,947 concurrent players.
At the time of writing (around 10 a.m. EST), SteamDB reports that more than 77,000 players are making cat armies in Mewgenics. The game’s 24-hour player peak of 94,092 occurred around 4 p.m. on Wednesday.
SteamDB says Mewgenics is no. 16 in daily active users (DAUs) and no. 5 on Steam’s top-selling titles list. What’s more, Mewgenics is currently no. 1 in wishlist activity, making the zany strategy game Steam’s most-wanted game.
