Best Free Platformer Games to Play Online

Platformers are the genre HTML5 was made for. Sharp keyboard input, tight collision detection, fast level loads — the foundational mechanics (run, jump, dodge spikes) translate cleanly across decades of game design. The picks on this page cover the full range from precise Mario-likes to weirder physics-driven jump games.

You'll find classic 2D platformers, parkour-heavy obstacle courses, single-screen puzzle platformers in the vein of Celeste, and a few longer-form Metroidvania-adjacent adventures. Most use a single keyboard input layout (WASD or arrows + space). A handful work on touch.

All HTML5, all free. The picks here run at 60fps on any laptop, start in under a second, and don't need a save system since most levels are short enough to finish in one sitting.