Thanks a lot for your comment! Yes it is kind of an 'auto-running' game, but you can accelerate and slow down, move to the front of the frame or back. When you fall out of the viewport, then its game over. In some levels you have a limited choice where to go, up or down.
Yes it triggers a lot of Ideas what could be done next, but I realized that I had to limit myself if I want to finish the game. Its done in my free time, so the resources where limited.
I worked a lot on the system that the dog can freely interact with his physics environment. Once that worked, my main focus was to use this system to built fun and diverse levels.