Computer strategy game, written in BASIC, in which the Enterprise (represented on a grid by an 'E') hurtled at warp speed from one solar system to another (stars represented by a '*') and engaged in pitched battles with Klingon warships (helpfully designated on the map by a 'K'). Graphics be damned, this thing held my attention for hours at a time back in the early 1980s.

There was also a text-based Star Trek battle game written during the same period in which you could issue simple commands to your crew and receive status reports every round. This game actually managed to be pretty exciting. Its main attraction (for me, at least) was that if you were really on the ropes with no hope of victory, you could initiate a self-destruct sequence and blow both your crippled vessel and your enemy to Kingdom Come. Yee-haw!