To run the game, type "go t" and enter. When the batch file menu appears, just type "t"

Calibrate your joystick, and when it says "computer malfunction detected, type in enemy name for realignment," just type in any name. The game is cracked.  

Some of the screens take a while to load, so be patient. When the actual game begins, it's fast and responsive. Get ready for a treat! A sort of bird's-eye-view mech shoot-em-up, it has eight-way smooth scrolling--much like Boulder Dash--which is shocking to see for a shmup on the jr. The controls take a little bit of getting used to, but once you get the hang of them, it's pretty fun.