- https://www.kodub.com/apps/polytrack
- https://kodub.itch.io/polytrack
- https://www.crazygames.com/game/polytrack
- https://poki.com/en/g/polytrack
- https://armorgames.com/polytrack-game/19464
- https://gato.us/game/poly-track
- https://webgamer.io/en/g/polytrack
These are the websites I remember giving permission to host the game, but they might also have other websites (for different languages and such) where they also host legal versions of the game, so this list is probably not complete.
And of course this list will become outdated, possibly quite quickly