Meccha Chameleon Hits 20 Million Copies Sold, Two Months After Launch

A hide-and-seek game made by a single Japanese developer has sold more than 20 million copies roughly two months after it launched on Steam.

The developer, known online as lemorion_1224, announced the milestone in a Steam news post titled "Over 20 million units sold!" on the game's official store page. Meccha Chameleon is a prop-hunt-style game — players paint themselves to blend into the environment, hiding in plain sight while others try to find them (Eurogamer).

The pace of those sales has been remarkable at every stage. The game sold 10 million copies within 16 days of release, then 15 million within 25 days, according to Eurogamer and Polygon. By the time the 20 million figure was announced, the game was still drawing a regular daily audience of around 22,000 players, per SteamDB tracking data cited by Eurogamer.

For context, a solo developer shipping a game that sells eight figures in weeks is a rare outcome on any platform. Steam, the PC gaming storefront run by Valve, hosts tens of thousands of games; most never approach numbers like these.

The path has not been entirely smooth. User-made maps for Meccha Chameleon were found to contain malware, and the game's official Discord server was hacked. Both issues have since been resolved, Eurogamer reported. The game supports community-created content — maps that players build and share — which is where the malicious files surfaced.

Meccha Chameleon launched on Steam in approximately June 2026, about two months before the 20 million sales announcement on 12 August 2026. The developer posted each sales milestone as a news update on the game's Steam store page, where the description now reads "Over 20 million units sold!" (Steam store page).

What makes the story stand out is the scale of the audience relative to the team behind it. One developer, one game, one platform — and twenty million buyers in a summer.