Been on Steam a while and in development a whole while longer-
I Ignored it myself at first (and it's not my current 'mech obsession!) but realised it's a strat I can play sat back with my Joypad! Well!

This lil' Action RPG is getting better and better and has a pretty huge following already.
The download's a teeny 160mb (i think).

You're firing through the tutorials pretty quick... Picking up units manually and/or setting patrol routes. Saving up for new weapons and units... it's all pretty accessable for a quick 15min game
Is helped by some omni-accessible build menu that means you grab units from any occupied post.

Also fairly pretty and a logical interface... I play pad but many play mouse.
Basics (Devs) http://www.youtube.com/watch?v=4Pxa1QtrWuE