Rio Rex is a monster-rampage game set in Rio de Janeiro: you're a Tyrannosaurus, the city is in your way, and the objective is as much destruction as you can manage before the military stops you.
It's part of the same lineage as the older Rex games — straightforward, cathartic, and entirely uninterested in nuance.
Destroy as much of Rio as possible as a rampaging T-Rex before the military brings you down.
By eating — it's the game's health mechanic, so aggression is safer than caution.
Yes — a light 2D game with nothing to install.