What is Rio Rex?
Rio Rex is a free adventure game with simulation, aim and dinosaurs elements that you can play online in your web browser on Gameziko. It needs no download, no install and no account. There's a T-Rex on the loose in Rio city!
How to play Rio Rex
- Press "Play now" on the game screen. Rio Rex loads inside the player; some games take up to 20 seconds and may show a short ad first.
- Arrow keys to move T-Rex, mouse to aim and eat victims.
- Use the full-screen button at the bottom right of the player for a bigger view, and press Esc to leave full screen.
Game details
| Category | Adventure |
|---|---|
| Tags | Simulation, aim, dinosaurs |
| Controls | Mouse, Arrow keys |
| Screen | Landscape (800 × 600) |
| Price | Free |
| Download or sign-up | Not needed |
| Distributed by | GameDistribution |
| Added to Gameziko | 30 September 2026 |
Description from the developer
There's a T-Rex on the loose in Rio city! Take on the role of the destructive dino as you attempt to incinerate everyone and everything on your path of destruction. The terrifying T-Rex has returned to bring destruction to yet another city. In this thrilling new action game, Rio Rex, you feast on humans while you level the lovely city of Rio de Janeiro to the ground. Your goal is to roast all humans with your flaming breath and to leave none of them uneaten. Feel free to take the rest of the city down with them! Rio Rex is the rampaging arcade game in which you can run riot controlling a huge T-Rex! Run through the towns and settlements destroying everything in sight and causing havoc amongst the puney humans in your way. This time you are let loose in the beautiful Rio but take a look back at the previous cities that have been destroyed at New York and Paris It is time again to chew people, destroy cities and blow your horrifying fire breathe at everything in sight. Go cause mayhem and destruction because why not! Have fun! Game developed by gametornado.
Rio Rex: frequently asked questions
Is Rio Rex free to play?
Yes. Rio Rex is free to play on Gameziko, with no download and no account needed. Like most free web games, it is funded by ads, so it may show a short ad before or between rounds.
What are the controls in Rio Rex?
The developer's instructions for Rio Rex say: "Arrow keys to move T-Rex, mouse to aim and eat victims."
Can I play Rio Rex on a phone or tablet?
Rio Rex is an HTML5 game, so it opens in modern mobile browsers as well as on a computer. Its controls were designed mainly for a mouse, so a computer usually gives the smoothest experience.
What games are similar to Rio Rex?
If you like Rio Rex, try Noob Fuse, Dino Simulator City Attack and Extreme Offroad Cars 3: Cargo. They are adventure games with similar themes, and you can find more in the Adventure category on Gameziko.
Good to know
Rio Rex is made by an independent developer and delivered by GameDistribution, so Gameziko cannot change the game or recover lost progress. Any progress the game saves is kept in your browser on this device. If the game does not start, wait up to 20 seconds, allow ads for gameziko.com and try again, or report the game.