Who-Dun-It? is a 1979 video game published by Instant Software for the TRS-80 16K. It is named for the whodunit, a type of crime fiction.
Who-Dun-It? is a game in which the player chooses one of five crimes to investigate.
Bruce Campbell reviewed Who-Dun-It? in The Space Gamer No. 40. Campbell commented that "I only recommend Who-Dun-It? to those who enjoy mysteries or logic problems. If you fit those categories, it may well be worth the relatively low price."