Crayon Physics Deluxe - Crayon Physics Deluxe
Terraria - Dig, Fight, Build! The very world is at your fingertips as you fight for survival, fortune, and glory.
SimPhy - Interactive 2D & 3D Physics simulation software
Physion - Physics Simulation Sandbox
Roblox - Reimagining the way people come together.
FisicaLab - FisicaLab (can be pronounced as PhysicsLab) is an educational application to solve physics problems.