Zoo Tycoon 2: Marine Mania adds new scenarios and challenges allowing players of all ages and skill levels to test their aquatic expertise. This demo features a tutorial, one map, playable in 2 modes (thanks 3DGamers).

Eidos and TT Games' LEGO adventure Bionicle Heroes brings to life the most powerful and exciting LEGO characters ever seen in one game, in an action-packed world of adventure and discovery. This one level demo allows you to try out the Piraka Blu level where you have to find and defeat Guurahk (thanks Piotr). Read more for download links ...

Enemy Territory: Quake Wars pits the armies of Earth against the invading alien Strogg in the ultimate online strategic shooter. Featuring strategic team play, persistent character promotions, day and nighttime combat missions, and the universe's most powerful weapons and vehicles.

Naruto: Uzumaki Chronicles is a PS2 exclusive action adventure title offering players a chance to become Naruto, the aspiring ninja with the power of the Nine-Tailed Fox Spirit sleeping deep within.

The game gives you the opportunity to play through the events of the film - leading up to and following the break down of the heist - from the perspective of each character, and find out what happened at the diamond store.

The original Sonic The Hedgehog that broke the speed barrier wide open on the SEGA Genesis is now on the GBA! The game has seven original gravity-defying stages that have been perfectly ported over to let players experience this classic on GBA.

Battlefield 2142 is set in the future, the world is plagued by a second Ice Age, and wars have broken out over the remaining territories. Mech Warrior-meets-Battlefield 2 is the best way to describe it. This standalone demo server for yesterdays Battlefield 2142 demo, so you can host your own multiplayer game.

18 Wheels of Steel: Haulin' is SCS Software's latest title in their truck driving sim line of games. This demo features the entire game's content, but is limited to 60 mins of play, which can be unlocked after purchasing an activation key (thanks 3DGamers). Read more for download links ..

Another day, another batch of game trailers was released. Instead of giving them all their own posts, we grouped them, and so far there are trailers for :

• Neverwinter Nights 2 - Developer Diary #3
• Resistance: Fall of Man [PS3] - Game Footage
• 
  
  We will update this throughout the day when new trailers become available. Read more for download links ...

Starting on Wednesday of next week Valve'll be starting a beta of the new Counter-Strike weapons market. The beta will give some real-world data to start the market going, along with making sure that any issues get fixed before its rolled this out to the entire community. Information on how to join the beta should show up shortly ...