Four great games from Australian developer Halfbrick are on the way to the PSP minis downloadable service, a series of smaller, casual games designed for quick play and instant action.

R.U.S.E. is a strategy game in which the players use their brain as the ultimate weapon, fighting a war of perception, where the ability to deceive and mislead the enemy determines success. A first in a strategy game, R.U.S.E. reinvigorates the genre by using deception to give new-found depth to the game play.

In a vast open world environment, Assassin's Creed II invites players to incarnate Ezio, a privileged young noble in Renaissance Italy who's been betrayed by the rival ruling families of Italy, and seeking vengeance.

Silent Hunter 5 ventures into uncharted territory and takes players behind the periscope of a German U-boat to take on the Allied Forces in famous battles across the vast Atlantic Ocean and Mediterranean Sea.

Might & Magic Clash of Heroes is a puzzle RPG in which, through five unique and epic quests, players will alternate exploration and turn-based puzzle battles in the game to save the world of Ashan from demonic chaos.

Guitar Hero: World Tour will feature guitar, vocals, drums, the ability to create your own songs (and upload them on GHTunes), four-player on/offline co-op, and an eight-player battle of the bands multiplayer mode (4vs4).

Check out the following new screens and trailers from Warner Bros.' GamesCom 2009 lineup:

• 'Scribblenauts' (NDS) - New Screens & Trailer
• 'TouchMaster 3' (NDS) - New Screens
• 'Where the Wild Things Are' (ALL) - New Screens
• 'The Clique: Diss and Make Up' (NDS) - New Screens
• 'LEGO Rock Band' (NDS) to be Peripheral-Free - Screens
• 'LEGO Rock Band' (Wii/PS3/X360) - New Screens & Trailer
• 'Game Party 3' (Wii) - New Screens
• 'Scooby-Doo! First Frights' (ALL) - 36 New Screens

John Cena, Undertaker, Randy Orton, Edge and Rey Mysterio will headline the new game, which promises to deliver player freedom never before experienced in the SmackDown vs. Raw franchise.

South Park Let's Go Tower Defense Play! is a fast-paced action/strategy game that combines these lovable characters with snowball battles and tower defense tactics.

Based on Cartoon Network’s action adventure series, The Secret Saturdays: Beasts of the 5th Sun puts players in control of Zak Saturday and the rest of the Saturday family, a group of scientific explorers dedicated to discovering and protecting the secret artifacts and mysterious creatures known as Cryptids.