Based on current community lists and uptime tracking, here are three working examples (always check safety first — use an ad blocker and avoid downloads):
(TF2) from a restricted network like school or work? Since Flash was officially retired years ago, you don't have to worry about outdated plugins. However, playing a full-scale PC shooter in a browser isn't as simple as clicking a link on a "Games 66" site—most of those are just clones or unrelated arcade games. ---- Team Fortress 2 Unblocked No Flash