Apple on Thursday updated its App of the Week promotion with the game Octagon. This means that for the next 7 days, you’ll be able to download the popular minimal arcade title on both iPhone and iPad for free, a solid savings of $2.

For those unfamiliar with Octagon, players are trapped inside an 8-sided, constantly-moving tunnel that features gaps and other obstacles. You must jump, dodge and do whatever you can to survive each torturous 60-secound round.

From the App Store Editors’ Notes:

If you took Super Hexagon, Impossible Road, and Tempest and shoved them in a blender, the resulting smoothie would probably taste like Octagon. It’s a psychedelic infinite runner backed by lean-mean electronic music and a difficulty that’ll have you begging for mercy while you tap to Retry.

And here’s a clip of Octagon in action:

Octagon is available in the App Store for free.