Thanks of the reply. There's a bug I found with this behaviour. In my project I have tilemaps setup used as the ground, set with a behaviour of Solid, if the player tries to move across any of these tilemaps, everything disappears off the screen. I tried making a new project and found out that this only happens with the SonicPhysics and not with any other behaviour. Fix would be great. Also player get's stuck on pixels on the ground while moving?