An expansion to Warhammer: Mark of Chaos for the PC, Warhammer: Mark of Chaos - Battle March builds upon the game's tactical foundation to offer new units for each army as well as an original campaign and new online modes. The Xbox 360 version, a standalone game that also include the original content from Warhammer: Mark of Chaos, is scheduled for later this year.

Check out the following new screens and trailers from Sierra entertainment's Spring Event 2008 lineup:

• 'Assault Heroes 2' (X360) - Facts, Features, Screens & Trailer
• 'Ghostbusters: The Videogame' (ALL) - 6 New Screens
• '50 Cent: Blood on the Sand' (PS3/X360) - 5 New Screens & Trailer
• 'Prototype' (PS3/X360/PC) - 2 New Trailers
• 'The Bourne Conspiracy' (PS3/X360) - 8 New Screens
• 'The Legend of Spyro: Dawn of the Dragon' (ALL) Announced - Screens
• 'Crash Bandicoot: Mind over Mutant' (ALL) Announced - Screens
• 'Zombie Wranglers' (X360) Announced - Screens
• 'Sea Life Safari' (X360) Announced - Screens
• 'World in Conflict: Soviet Assault' (PS3/X360/PC) - 15 New Screens

Monster Madness: Grave Danger follows in the footsteps of Monster Madness: Battle for Suburbia with 4 player co-op gameplay, an all new polished look and a number of new/improved features. Based on fan feedback from the original every Zombie, Werewolf and Vampire has been recalled to square one.

East Carolina University reveals the results of a 6-month randomized, controlled study that confirms positive health benefits of so-called "casual" video games, such as Bejeweled 2, Peggle and Bookworm Adventures.

Sierra announced The Legend of Spyro: Dawn of the Dragon, the third chapter in the popular Legend of Spyro trilogy. Reprising their roles as the characters of Spyro and his mentor Ignitus, are Elijah Wood (Frodo Baggins in The Lord of the Rings trilogy) and Gary Oldman (Sirius Black from the Harry Potter films), as well as Christina Ricci, Blair Underwood, Mark Hamill and Wayne Brady, rounding out an all-star voice cast.

Valve's physics-focused puzzle game Portal has been denied access to Xbox Live Arcade according to Valve marketing director Doug Lombardi. Currently part of the Orange Box, Microsoft was approached to have Portal downloadable through XBLA but turned it down due to "size limit and all kinds of other things," although Doug did say it might be possible somewhere down the line, "I think it's a trade-off, we'll see it one day."

In Crash Bandicoot: Mind over Mutant, a rejuvenated Neo Cortex is taking over the world one brain at a time! Cortex and N. Brio devise a new kind of evil — a text-messaging, do-anything device that controls both mutant and bandicoot minds. Armed with his wits and lightning agility, Crash must free his friends, the titans, and save the day!

Another day, another batch of games shipped to stores. Instead of giving them all their own posts, we grouped them, and so far there are announcements for:

• Mario Kart Wii (Wii)
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  We will update this throughout the day when new announcements become available. Read more for details ...

SOCOM Confrontation focuses on online play and the global community and clans that support it, with support for Tournaments, Clan Ladders, and Leader Boards. Additionally, players will be able to modify their appearance through facial and physical customization.

Today Nintendo added yet another classic game to the Wii's Shop Channel. Wii owners with a high-speed Internet access can redeem Wii Points to download the following title: Double Dragon.