rogue-like computer game:
Like Rogue and Nethack, Brogue is an single player dungeon crawler. It uses a software library specifically made for the creation of Roguelike games. If you are going to download it, and play it, I recommend using the edition with character fonts: Brogue with Tiles by Oryx
Legend of Dungeon, another rogue-like but with 3D voxel based graphics. Probably best with a gamepad. This one is pretty simple, with only a few controls. It also features an online scoreboard.
Another fun game that swings away from Rogue and more into DigDug is Steamworld Dig. A fun steampunk-ish game where you are digging in a mine underneath an old west town.
Last fall, I was also playing XCOM: Enemy Within. The expansion to XCOM: enemy unknown. A fun turn based isometric RPG, based on the old and trusted XCOM series. The expansion includes cyborgs and a competing agency.