I thought this game was very entertaining! It's very creative and I think the dinosaur controls are very fun to play with. There's nothing better than slamming a caveman against a tower and then throwing him into a pit of lava. The destruction physics are perfect in a game like this and you pulled it off very well!
The only critique I have is just adding more sources of lava (or more ways to obliterate the cavemen) as I feel like once you catch a caveman, the flow of the game is interrupted a bit. Regardless, it was still a fun game! It had a lot of Destroy All Humans vibes for me!