There are no tutorials of any sort (and none required). It's a very elegant design.
A clever but tricky puzzler that speaks for itself, even if it lacks so much as a title screen.
— Jay is Games
The mechanics are so engaging that they need to be experienced and not read about.
Part of its charm is that it has no story and no instructions. Part of the joy - and frustration - is figuring it out as you go.
— Machinima's Inside Gaming
The satisfaction from finally cracking a mind-tickler of a level keeps you playing more.
— That Gamer Hub
Impasse has no story, no faux-justification for its existence. It's simply a challenge, and it's an excellent one.
— Rock Paper Shotgun