R-Type Dimension is released on XBLA for 1200 points. I bought it and man, I forgot how hard it is. It includes two games, R-Type and R-Type II. It's awesome, they remake both in full 3D and they're well done. You can switch to 2D on the fly by press "Y" button. It's amazing, also crazy camera mode (it's harder) and some great features like co-op play, infinite mode (unlimited lives), different render mode (retro, retro 8bit, retro 2.0 etc). If you're a big fan of R-Type, you must get it.