we already got a Caveman Protagonists game group. Now, I just added a game where you can design and play a dinosaur in the Jurassic (Designasaurus II, coming soon to YOUR favourite game database :-). This game doesn't fit into that group, but there's nothing else.
So I suggest to add a "Games with Dinosaurs" game group ("Dinosaur protagonist" would probably be to narrow?), and also a "Prehistoric" game groups for all games playing in prehistoric times (Stone Age or even earlier geological time periods).
There should be enough games for both of these groups, and the Dinosaur group would be great for those occasional Dinosaur freaks ;-)
What do you think?
Write a final draft and we'll add it.
I'd say prehistoric creatures, that would cover dinosaurs, mammoths et al in modern setting as well as ancient ones