Krunker

Krunker is a browser-based first-person shooter built around a slidehop movement system that rewards technical skill. You'll rotate through 23 maps in standard modes, earning unlocks as you rack up kills. The movement lets you chain slides and hops to build speed—mastering it separates casual players from those landing consistent quick-scopes and killstreaks. Beyond the default rotation, thousands of player-made custom games cover modes like Infected, parkour, free-for-all, and capture the flag. The game includes modding and mapping tools, so the community constantly churns out new arenas and rulesets. If you want a low-barrier FPS that doesn't flatten its skill ceiling, this delivers.