Crypt of the Necrodancer

The only real roguelike I ever liked.
Picture a rhythm/dance-themed roguelike with somewhat of a limited weapon and equipment tree in the game.

No spells, abilities. Only a shovel and a weapon.
The combo is based off of the 'beats' you need to hit.
It is a royal pain in the butt, even when you master it.

Also the music was done by the same guy who did The Binding of Issac, Dan Barinowsky. It is some of his best work.
Heavily recommend it.