A ragdoll physics puzzle game. It is notoriously violent and gory, so . Many "100x" collections avoid the gory levels or use the "AD" (acceptable for school) versions.
If you are looking for the actual games often found on these sites, these are the current top picks: classroom 100x unblocked games
Once you find a site with no pop-ups, blue layout, and HTTPS secure (the padlock icon), bookmark it. Do not share it on social media; the moment it goes viral, the IT department blocks it. A ragdoll physics puzzle game