Can you handle all of these intense obstacle courses? Each one is filled with crushed cars, barriers, gaps and other stuff that could really wreck your monster truck. You’ll definitely want to choose a super awesome rig before you get started on the crazy challenges you’ll find in this online racing game. Play Truck Trials on Dob5.com. Truck Trials is an online HTML5 game. You can play the game on smartphone and tablet (iPhone, iPad, Samsung, Android devices and windows iPhone).