The original game a deck-builder for 1-5 players. Each player becomes a badass predator dinosaur that will fight others for territory and resources (you can check out our full review here). If you want to try out the game before backing the Kickstarter, there is a print & play version.
The Kickstarter offers the Stomping Grounds expansion and three new playable Apex Decks: Saurophaganax, Therizinosaurus, and Megalodon.
Stomping Grounds adds more player interaction, new elimination rules, new Evolve and Affliction cards, and the ability to customize your deck. The new decks add three alpha cards as well as new apex cards, environments, carcasses, and animal cards. You can also add on a super cool (un-painted) t-rex minifigure for $10 + shipping.
You can get the expansion and all of the stretch goals for just $40 to head over to Kickstarter and sink your teeth into the Apex TDBG: Stomping Grounds project!