Sources tell me that the rumored Playstation Portable version of Oblivion are true. The game is being ported by Climax UK and while I couldn't find out what form the game would take, I'm told that UMD space isn't as big a concern as some might think. The PSP version won't have 512x512 textures, instead relying on something closer to 128x128 textures and true color will likely be replaced by 16 color. Both of these moves greatly reduces the amount of space the final game would likely take up