Changes

* Parsec was the first TI-99/4A game to use bit map graphics which is why its quality exceeds the visual quality of previous TI games.

* After the game says "Press Fire to Begin," if the player crashed into the ground instead of firing, the player will sometimes be warped to a further stage in the game. This doesn't always work, however.

* Holding down the fire buttons on two joysticks simultaneously will make it so the player never overheats.