Intergalactic Space Rescue (Tiny BASIC version)

A simple non-graphical version of Intergalactic Space Rescue, a procedurally generated puzzle game. Work your way through up to 1000 rescue missions, locating a stricken starship in deep space among dangers like asteroids and wormholes, and friendly planets that resupply your fuel.

The source code is included and demonstrates how to write such a game in a language without arrays or a random number generator.