Offroad Grand Monster Truck Hill Drive offers physics-based truck control. Also it has trucks and challenges that you can play for free on the site.
You click to steer and accelerate, and you go Fast.
Physics is a key part of the game and the physics engine is realistic. The game has trucks and challenges.
Simple is how i found the best way to play. Watch to learn to balance the truck then use boosts on the hills.
Q: What are the controls? A: Clicking to steer and accelerate is stated.
Q: What is the objective? A: Not stated.
Q: Is there a cost to play? A: The game is free with optional upgrades.
Q: What is the main mechanic? A: Physics is a key part.