Meccha Chameleon

Meccha Chameleon is a hide-and-seek video game where players play as white bipedal player characters who are split into two groups, hunters and chameleons. Hunters need to find chameleons, while chameleons hide and blend into their surroundings by painting their characters. Chameleons can hide either as a blobby or cubic character, and either as a petite (half the normal size), normal, or plump (twice the normal size) sized character. The player can use different coloring tools, such as a color picker and an eyedropper, and choose different poses, such as curling up or lying down.

The chameleons can also create clones or select different sizes of the chosen character shape to help them hide. The hunters must find the chameleons before the timer runs out.

Meccha Chameleon was developed by Japanese indie game developer Lemorion_1224 with the help of Haganeiro. The two previously developed games for Fortnite using Epic Games' Unreal Editor for Fortnite before moving to Steam. Lemorion's other games include the Penguin Hotel series and Link Penguins.

The game was conceived after the two developers played various Fortnite games with hide-and-seek style mechanics. The game was Lemorion's idea after he remembered an artist on television painting themselves to blend into the surroundings. He handled the development of graphics, planning, background music, models, and maps, while Haganeiro handled system management and effects. Components and assets are reused, including the back-end systems, from Penguin Hotel and Link Penguins.

Meccha Chameleon was described by Sam Woods of TheGamer as "2026's biggest viral sensation", while Elie Gould of PC Gamer praised its gameplay that gave it the potential to "become one of the giants in [the friendslop] genre". Edwin Evans-Thirlwell of Rock Paper Shotgun said that "one of the game's loveliest qualities is that, strictly speaking, you don't need to play it to play it."

It was described as the fastest and best-selling game of 2026, outselling games like Resident Evil Requiem, Forza Horizon 6, and Crimson Desert. It debuted in first place on the Japanese Steam sales charts, beating Forza Horizon 6 and Final Fantasy VII Remake Intergrade. It reached second place on the global Steam sales chart. By August 11, it was estimated by Inven Global to have earned around US$119 million.