Part of your description says this is barely done, and it's definitely that. I'm not going to focus on that though, because I think your design is much more interesting than its shortcomings. You've got this two player semi-asymetrical game. Players can choose to play as either a horse, who is fast, or a dino, who's the win condition for the game. As a fun little party game that's actually pretty compelling to me. It's fast, it's easy to pick up on, and there's a level of light strategy to it. You may not have finished your project in much of a state, but I do think you hit on something kinda cool here!