Time Out - Break timer with micro-breaks for Mac OS X.
GameApart - Online board, card & party games on any video conference app
Breaktime - Break time is an app that reminds you to stand up every chosen amount of time.
Zoom Games - Curated and filterable list of games to try on video calls
stretchly - break time reminder app
The Hike Game by Arc.dev - A "Choose Your Own Adventure" Zoom game for remote teams