SoftSide was a popular computer magazine that covered multiple computer platforms, including the TRS-80, Apple II, Atari, Commodore 64, and IBM PC. It was published from October 1978 until 1984. Apart from reviews and news bits, it contained a large number of type-in listings.
The majority of the adventure games weren't listed in the magazine, though - the SoftSide Adventure of the Month was a disk/tape based series of releases, and the SoftSide Adventure Series was featured as a bonus if you purchased the disk or tape with the current issue's listings pre-typed.
The entire range of issues can be read online at archive.org.