Wow. I've spend about 5 days straight playing this one, and I still hungered for more.
SPAZ, or Space Pirates and Zombies (And Bounty Hunters) feels unique. You've got a small fleet of spaceships, and your objective is to reach the center of the galaxy, in search of a fabled load of Rez, an exceptional element discovered in the future capable of being transformed into any metal you need - starting ALL THE WAY BACK from the edge of the Perseus arm, where Earth is currently situated. You can assume direct control of any of your ships at any time in the field - being able to switch back and forth at a moment's notice, while the AI takes care of your other ships for you. You also have a Tactics panel, from which you can evaluate the situation of the entire battlefield and give orders to your fleet, set action stances, order reinforcements, etc. You can also DESIGN each and every one of your ships - you can unlock different hulls, weapons, modules, you name it.
You'll find yourself dragged into a MARATHON once you get a hold of it. There's only one problem, though: the game is a bit grindy. The Milky Way is ENORMOUS, so there can be quite an expanse between your location and your objective in it. You'll find yourself battling through a load of star systems just to reach your next mission or unlock the newest upgrade, and that takes time and resources - most of which you'll be grinding out of mining stations/enemy fleets if you're careless. If it weren't for the grinding, this game would be perfect on my book. But still, it's VERY enjoyable.
Has a great story - but I don't want to spoil it. Play your cards right and the game will go easy on you. Screw up, and expect to spend a few hours grinding for Rez.
DEFINITELY recommend. You'll need some patience, though.