Here, something archaic. This is a Star Trek computer game from the 1970s, original author unknown. I ported it from Univac EXEC9 BASIC to TRS-80 Level II BASIC... some time ago. And I'm putting it on here just so it's on the net somewhere. It's pretty clean and really could be run on any console basic with minimal modifications, if you wanted to know what computer games were like in the age of teletypes. Seriously, I ran this on an ASR-33; the delay code down at line 57000 is to keep the pacing right on that blindingly-fast glass terminal of the TRS-80. XD The timing of that loop is about 0.8 seconds, if you wanted to implement it correctly.
eta: Well, crap, Dreamwidth's parser gets <pre> wrong. Um... hell.
STREK.BAS as a text file. Go go search engines, find it.
Also posted to ソ-ラ-バ-ド-のおん; comments at Dreamwidth.