Algodoo

this doesn't really gimbal though, because firstly the engine turns the wrong way, second it doesn't turn more than a few degrees, and third the torque being applied to the vehicle is being directly generated by the lateral thrusters instead of the rotation of the thruster. I recommend having a controlled joint instead of thruster power to push it.

I built a rocket with the principle of action and reaction and did not use any propellant

thank you for pointing that out UnityDogGaming04, i fixed it