Pizza Edition is a site full of ~200 games altho some if not most are blocked, but the ones that arnt are pretty gud so here ya go! Link will take you to their hub with all there sites (they are the same and add new ones to help with blocking)

Full of hundreds of games that are cool but have nothin to do with math!

EaglerCraft is a (now discontinued) hack of the original Minecraft 1.5.2 jar that runs on on a website via JS, works on chromebooks.

has like a bajillion games, including but not limited to, the entireee riddle school franchize

Has ~50 games, i like "tv static" (its just tv static)

VERY GUD 

Gud 

welp it doesnt have a name really but its got some games i guess so here ya go

RB's Games has like alot games n stuff so have fun!

Classroom6x has a ALOT of games, some blocked but most not!