- Released: 1993-
- Developer: A.I Company Ltd.
- Genre: Platform
- Mode(s): Single Player
*Bonk's Adventure is a 2D platform game developed by Red Company and Atlus as the first game in the Bonk series that was released in 1989 in Japan and 1990 in North America for the TurboGrafx-16. In Japan it was released as PC Genjin (PC原人) in 1989, a play on the Japanese name for the system, 'PC Engine'. The game was re-released for the TurboGrafx-16 in the U.S. in 1992 on the Gate of Thunder 4-in-1 game CD-ROM.
The game was later ported to the NES, Amiga and arcade systems under different titles (FC Genjin and BC Genjin). A completely different game with the same name appeared on the Game Boy (under the title GB Genjin in Japan). It is also available through Nintendo's Virtual Console service, on the PlayStation Store and there is a version for mobile phones in Japan.