I distinctly remember playing this on armorgames.com. You went around this house cleansing it (i think) of evil spirits. You could only see them if you wore some kind of mask. You knew where it was when you found a half eaten rat on the floor. I cannot for the life of me find it on the site anymore. I don't remember the name to even know if it still exists anymore. Source: over 2 years ago

Shattered Pixel Dungeon - This is a variant of the original Pixel Dungeon. This version is better balanced and has more content. Available for PC, tablets and phones. Source: over 2 years ago

Pixel Dungeon and it's many of it's modded versions are free of grinding and financial transactions. Some modded versions have grindy typical RPG aspects added to them, but most don't. Most if not all mods should be available if you are open to using an android emulator. Pixel Dungeon classic is unforgiving and will do it's best to kill you. Shattered Pixel Dungeon is a much more expansive mod of the original that... Source: almost 3 years ago