Color perception game: recreate a target color by eye with RGB sliders across several difficulty modes, then compare on a global leaderboard. Free, no account, works on phone and desktop. How it plays: drag the R/G/B sliders to match the target color; score depends on how close you get.
Color Genius was submitted to SlowDen by Swee. SlowDen did not make this game - it is published here from the developer's own submission, added on 2026-10-13. It runs in the browser with no download, no install and no sign-up.