Three Mile Island is an Apple II game written by Richard Orban and published by Muse Software in 1979.

Three Mile Island: Special Edition is a 1980 update that is written in 6502 assembly language instead of Integer BASIC.

[1] The game gets its name from the Three Mile Island accident, which occurred the same year as its release.

The date the game is set is December 30, 1978 - which was also the day Unit 2 of the Three Mile Island Nuclear Generating Station went into commercial operation.

Webster commented that "Three Mile Island is not a cheap piece of software, in any sense of the term.