Instructions
Go to the homepage of the "Dino Run" game (pixeljam.com/dinorun).
Select "Options + Speedruns" from the list on the page. This feature allows you to change the difficulty of the game, shop with your collected bones and enable cheats.
Click on "Cheats + Mods" to open up the screen where you can enable cheats and modify your play.
Scroll through the list until you get to "Meteor Storm." Click on it to activate it. A white dinosaur egg will appear to indicate that it's activated.
Pick "Start Running" to start the more difficult game with the meteor storm activated.