The following games are tagged with caveman

Barbarian II: The Dungeon Of Drax
Acorn Electron
Superior/Acornsoft

BC's Quest for Tires
Spectrum 48K
Software Projects

Caveman Ugh-Lympics
Commodore 64/128
Electronic Arts

Chuck Rock
Sega Master System (EU Version)
Virgin Games

Chuck Rock II: Son of Chuck
Sega Mega Drive (EU Version)
Core Design

Frak
Acorn Electron
Aardvark

Joe & Mac
Sega Genesis
Takara

Prehistorik 2
Amstrad CPC464
Titus

Sapiens (UK Version)
Amstrad CPC464
Loriciels

Yabba Dabba Doo
Spectrum 48K
Quicksilva