dessgeega describes Drain Storm as an “FPS for Roguelikes,” since it retains the turn-based movement, randomly-generated dungeons, and low-level tactics, but drops the complex controls and memorization. What you get is a really fast-paced strategy game that is easy to pick up and play.
The game is quite difficult, and on any setting higher than “Beginner” you’ll find yourself swarmed by enemies at every turn. Even with a dazzling array of weaponry, it’s hard to make it to the Sewer City and below (where the real fun starts). But because games move so quickly and every time feels so different, it’s rarely frustrating.
This one is great fun! And best of all, it comes as a 1.2Mb executable (no installer or zip files).
(Source: The Gamer’s Quarter Forums)