See How-To. (If How-To is not an option, press m.) There is a glitch, and after you've played once, dinosaurs will keep multiplying so that if you play again, dinosaurs are everywhere and you are instantly killed. If you wait long enough they are gone when you press play, however. If you have any suggestions to fix my glitch, please help me in the comments! Thank you!
Based on a game called "Squirrel Eat Squirrel" and alike to many fish-eat-fish games.