Games That Werent - Cancelled & Unreleased Games | Go Ape! - C64 clone of Rampage that never was @GamesThatWerent | Uploaded April 2023 | Updated October 2024, 1 day ago.
Go Ape! was a blatant Rampage clone for the #C64, developed originally for Kele Line in Denmark in 1988.

A decent clone, sadly abandoned due to the coder going back to finish their school work. An advanced preview can be found at GTW:

gamesthatwerent.com/gtw64/go-ape