EA announced last week that they have teamed up with Crytek to provide gamers with a free 10 days of Crysis Wars - the multiplayer version of Crysis Warhead. It has been available to play since Friday, December 19 at 9:00 AM (Pacific Time) until December 28 at 11:59 PM, and gamers only have to register and download to play.
The 10 free days come at the same time as a 'Holiday Pack' is released for the game, featuring two new maps for Crysis Wars: Savannah, and Frost. The Savannah map is a PowerStruggle map, whereas the Frost map is a TeamInstantAction map. The two new maps are available both for current owners of the game and for those taking advantage of the 10 free days offer. A new patch (1.3) was released earlier in the month, fixing some map and performance issues, which has already been included in the Crysis Wars download.
EA and Crytek announced a free weekend back in October, also for Crysis Wars. The game is considered by Crytek to be separate from both Crysis and Crysis: Warhead, although is currently sold only with Crysis: Warhead.
The game can be downloaded at MyCrysis, although you'll have to register first, freely of course. So if you haven't already seen the great graphics, this is a free chance to do so - although time is limited.