Hideo Kojima, the lead man on the Metal Gear Solid 2 project is working on a new game for Game Boy Advance, simply titled "My Sun".

In what has to be one of the most novel ideas for a game, the cartridge contains a small light sensor, which in conjunction with the game software, can alter parameters based on the amount of light in the room.

The idea is simple, certain puzzles and situations would require certain amounts of "sunlight" in order to proceed. If you need to sneak through an area, you'll need darkness. To vanquish a vampire, you need bright sunlight.

No word on a release date yet, or even if this title will make it to the States, but we'll be keeping our eye on it.