Hey Gerard, this sounds like exactly the kind of feedback I'm looking for.
Game link: Dualspace
Playtime: Each level is around 1-3 minutes, and there are ten levels in the free demo.
Dualspace is a browser-playable sokoban puzzle game. I am looking for harsh feedback on User Experience and onboarding, before marketing.
Note: The full game costs $4.99, but no payment is needed for this playtest.