Confirming reports from last Friday, the multiplayer demo - available to XBL Gold members only - will feature the 'Skyline' map and two game modes, 'Team Instant Action' (team deathmatch) and 'Crash Site'.
In Crash Site, players battle for control of alien drop pods, earning points by guarding them and keeping enemies at bay.
Crysis 2's full multiplayer experience will include six gameplay modes and 12 maps set across recognisable locations in New York City. Players can earn up to 50 multiplayer ranks which can be completed ten times.
"Crysis 2 offers a fresh, new take on multiplayer - one that will stand out and establish the game as a top contender in the first person shooter genre," said Crytek CEO Cevat Yerli.