One more Aliens vs. Predator trailer today, this one shows the Infestation multi-player game mode. In this mode it's Aliens vs Marines, when a Marine is killed he seems to join the ranks of the Aliens.

Also, here's three Aliens vs. Predator screenshots from the Xbox 360 demo which should be available today, also due today on PS3 and on Steam for the PC with the final release around two weeks away.

"The team at Rebellion has created a truly immersive multiplayer experience with three completely different and compelling playable species. We believe that Aliens vs Predator offers gamers a unique alternative to the current FPS multiplayer games on the market, and sets a precedent for the evolution of multiplayer gaming in the genre," said Gary Knight, European Marketing Director of SEGA Europe.

"Multiplayer was a huge part of our original AVP game back in 1999, and we’ve kept the spirit of that classic experience in creating the multiplayer for our new Aliens vs Predator. With the demo now gamers can get to grips with each of the three iconic species so they can hone their skills and be ready for when the game launches and battle commences," said Jason Kingsley, CEO and Creative Director of Rebellion.