Beginning on April 18, Microsoft is bringing us four new XBLA games, in an event titled "Arcade NEXT".
April 18 -- Trials Evolution (1,200msp)
The follow-up to the smash hit "Trials HD"! Build your own tracks with the built-in editor, or download player created tracks. Customize your bike and rider, compete on the leaderboards and take on skill-based minigames.
April 25 -- Bloodforge (1,600msp)
Slaughter hordes of demonic soldiers and even the gods themselves in a dark, visceral story of revenge, betrayal and destiny.
May 2 -- Fable Heroes (800msp)
Work together with up to four players to defeat enemies, while also competing for gold coins. The gold collected in Fable Heroes can be imported into the upcoming Kinect enabled "Fable: The Journey".
May 9 -- Minecraft: Xbox 360 Edition (1,600msp)
This one needs no introduction! The popular PC sandbox crafter comes to XBLA with a brand-new interface, a full tutorial and split-screen multiplayer over Xbox Live, a first for Minecraft.
All of the games will offer 400 gamerscore and up to 30 achievements to unlock, as per Microsoft's new policy.
Source