In Dante's Fall you fall continually and at very high speed, until you come into contact with something. At which point it's game over, you check to see if you beat your high score, and then try again.
The controls are thankfully simple: just tap either side of the screen to move left or right.
It's a hard game, and while that's totally fine with me, it feels like it's too hard too quickly, giving you no time to learn the subtleties of its play. I explain in the video below that I believe those that thought Super Hexagon was kid's stuff will lap this up, but for everyone else, from what I've played so far, Dante's Fall is an exercise in punishment and frustration.