A lone adventurer on the hyperbolic plane
HyperRogue drops you into a strange, non-Euclidean world where time only moves when you do. You are a lone adventurer trying to gather as much treasure as you can before the monsters catch you. The main goal is to find the legendary Orbs of Yendor, and collecting one wins the game, but you can also ignore that quest and just hunt smaller treasures instead. The world itself is built on the hyperbolic plane, so the grid is made of hexagons and heptagons rather than squares. Straight lines that look parallel can diverge and never cross, and triangles have angles adding up to less than 180 degrees. Because the world is practically infinite, reaching the same place twice is extremely unlikely, and when you do return, the world seems rotated. All of this geometry directly affects how you play.
Exploring about 60 different lands
You will explore about 60 different lands, each with its own unique treasures, enemies, and terrain obstacles. The game draws on the roguetime genre, the art of M. C. Escher, and puzzle games like Deadly Rooms of Death. Since time moves only when you move, every step is a tactical decision: moving to grab treasure also advances the monsters. The experimental modes let you change many aspects of the game for non-Euclidean experimentation, including a racing mode, a real-time "shmup" mode, 3D geometries such as Thurston geometries, and SteamVR virtual reality. It is even possible to play HyperRogue as a non-Euclidean first person shooter. The game is often updated.
Playing together and what to know before starting
HyperRogue supports Remote Play Together, so a group can join in through that feature. The game is tagged with Local Co-Op as well. Before starting, know that the unusual geometry is not just a backdrop — it is the core mechanic you have to work with. The world's practically infinite size means you will rarely see the same location twice, and the way space curves will change how you plan your route toward the Orbs of Yendor.