Originally posted by DrBong
The first Amiga magazine, Amiga World, didn't get any games to review until their May/June 1986 issue. In that issue they reviewed One on One, The Seven Cities of Gold, Borrowed Time, Mindshadow, and Monkey Business. Monkey Business may very well have been the only game in that lot that was actually released in 1985. Seven Cities may have been another one. If a game contains files, the dates of exec files or the startup-sequence file can sometimes provide important clues to the year of release.
Besides Monkey Business, I can confirm from my originals that One on One, The Seven Cities of Gold, Hacker and Mind Shadow were all released in 1985. Not sure about Borrowed Time, though, as I don't own it.