Miner Defense, a single-player/coop version of Miner Warfare, was sent this Thuesday as an entry to Microsoft DBP12.
DBP is currently the most important Indie game challenge for XBOX Live Indie games featuring big prizes and a really big number of games across XBOX and WP7.
Miner Defense is a crossover between a tower-defense game and a cooperative action platformer.
You and your turrets can gain experience by surviving waves of increasing powerful enemies while protecting the gate to the next stage.
A standard game lasts around 10 minutes and 6-7 waves of 50-100 enemies each.
You can se a gameplay trailer here: