Just yesterday Microsoft unveiled its plan for "Xbox Originals," which will allow Xbox 360 owners to download certain Xbox titles such as the first Halo. It's not all sunshine and lollipops, however, as the company has already acknowledged on Xbox.com that some titles may not run smoothly or could even crash completely.

One issue common to all Xbox Originals titles is that publisher logos at the start of a game "can be choppy on first play when caching." In addition, for games that contain additional content (e.g. a demo or trailer), that content won't be supported and "selecting those options may result in crashing the game (requiring a restart of the console)."

For the first round of titles, Microsoft has also listed issues specific to each game, as outlined below.

Crimson Skies: High Road to Revenge: There is some minor flickering at the top of the screen that happens very rarely. The "Press A to Continue" message is missing when the host player leaves a multiplayer game.

Fable: There are some random bursts of audio static and some minor texture issues and a short hang up when removing tattoos.

Fuzion Frenzy: There are some minor frame rate issues.

Halo: There are some very mild frame rate drops.

Psychonauts: HDMI 720p is not supported for PAL users. Running the game in 720p over HDMI will result in the game locking up for PAL users. If you are using HDMI output, set the resolution to 1080i or 1080p (anything but 720p).