Game url:
http://www.hotwheels.com/en-us/games/t-wrecks-gut-buster.html

Hacks:
Infinite time. Cars go slower.

Game url:
http://www.hotwheels.com/en-us/games/t-rex-rampage-prehistoric-pizza.html

Hacks:
Never run out of energy. Unlimited areas where you can smash.

Game url:
http://www.hotwheels.com/en-us/games/dragon-fire-scorched-pursuit.html

Hacks:
Unlimited time. Never die. Never run out of energy.

Game url:
http://9fishgames.com/kids-games/cartoon-network-games/last-villain-standing.html

Hacks:
Immortal, Unlimited Time, Infinite Money and Points, Everything Unlocked, Indestructible