Mortol (UFO 50)

This is cool. A 2D platformer where you have a small army of dudes that can sacrifice themselves to create stone blocks, lodge themselves in walls to make platforms, and explode to destroy barriers.

I beat level 1-A with 12 dudes left. And now I have to continue on level 1-B with 12 dudes, or try to improve the 1-A run. It's a Lemmings 2 type of thing, where your numbers are slowly whittled down, level by level.