Play game DinoZ by RHM Interactive on this site available for free of cost, please share it with your friends.
About DinoZ game:
Intelligent dinosaurs, kept in a controlled environment for scientific researches, escape the lab due to an unexpected mistake! They also take scientist as hostages. Dinosaurs head off to forest along with scientists and set up various traps… You can try to save hostages either by yourself as a single player or with your friends in “2 player” mode.