During my pneumonia period I didn't stop gaming. I just went with mindless slaughter in the PS3.

Amongst other things I downloaded Space Marine. It's a 1st/3rd person shooter. You get to run Captain Titus of the Ultramarines vs. hordes of Orks (and later some Chaos). It's surprisingly fun. Partly because it's 40k and I'm a fanboi, but also because it works rather well on it's own (and I'm not really  a big fan of shooters).

There is some lameness, like your two (yes, only two, there rest of the company seems to be 'elsewhere') companions, Mr. Gruff Sergeant and Mr. Doesn't Respect Your Authority Brother, who are entirely immune to damage and able to do very little damage to the enemy. But by and large the campaign works quite well. Story is basic, but not bad. The orks are more fun than the later Chaos hordes. Game is not short, but not long either.

Multiplayer is...different. Marines (in this game) move and fight like slow clunky tanks. Most weapons require multiple hit to kill. So it plays rather differently than most other shooters. For good and bad. For me the saving grace is playing Assault Marines. Since I suck at aiming charging into battle with jump-pack and chainsword is just perfect for me. And it sooo fun to see the other players panic when they hear you slamming down and reving up the chainsword...

All in all a decent game. I'd give it a 4 on a d6. It can be downloaded cheaply form Playstation Store. Many hours of gory fun!