Already Steam you can currently get Desktop Dungeons: Enhanced Edition for free. It is a tactical dungeon crawler with logical puzzles and roguelike elements, which has a rating of 89% on the aforementioned digital platform.
The game was released in 2013 by the studio QCF Design, which is giving away the game on the occasion of the release of a remastered version called Desktop Dungeons: Rewind.
You can add the title to your library for free until April 25 (18:00). Once activated, it stays with you forever.