The following games are tagged with prehistoric

B. C. Bill
Dragon 32
Imagine

BC's Quest for Tires
Spectrum 48K
Software Projects

Caveman Capers
Acorn Electron
Icon

Cavey
BBC Model B
Players

Frak!
Acorn Electron
Aardvark

Kokotoni Wilf
Spectrum 48K
Elite

Renegade III: The Final Chapter
Spectrum 48K/128K/+2/+3
Imagine

The Flintstones
Spectrum 48K/128K
Grandslam

The Flintstones Bedrock Racing
PlayStation 2
Blast! Entertainment

The Flintstones: Big Trouble In Bedrock
Game Boy Advance
Conspiracy Entertainment

Yabba Dabba Doo
Spectrum 48K
Quicksilva