Versions

The original release is a Super Gameboy enabled Game Boy Cart. The only other official releases are the 3DS Virtual Console, and the Switch Game Boy.

Each version is valid for runs, however the 3DS version has longer invincibility frames for enemies. This is apparent from the Jupiter/Electric Shot weapon get demo (as noticed by Brook)

If using Super Game Boy 1, note that your time will be adjusted by the leaderboard to be 102% of the original time due to speed differences. Super Game Boy 2 runs closer to the correct speed.

Game Cube Game Boy Player runs at an appropriate speed.