HyperRogue by Zeno Rogue Games is a roguelike set on a hyperbolic plane. You don’t need to know what hyperbolic plane is to have fun with it. You can explore 28 lands, each with its own unique monsters, terrain, and treasure. The game has emphasis on tactics, exploration, and unique presentation. Ported to Pandora by mcobit.
Several new lands and features. Sound effects and animations (3D mode disabled by default because Pandora is slow). See more on the HyperRogue blog: http://zenorogue.blogspot.com/search/label/hyper