#8
Krunker fills the ultra-lightweight FPS slot and does it well. It runs in a browser, hits frame rates well above 100 FPS on very old machines, and needs zero installation. The voxel art keeps rendering cheap, and custom lobbies mean you can find a game in under a minute. At 10K+ concurrent players it's a smaller community than Valorant or TF2, which shows up in the competitive scene—there's no structured ranked ladder, and the skill ceiling for movement tech is deceptively high once you leave casual lobbies. For players on extremely constrained hardware, though, it's the fastest route to a working FPS session.