Algodoo

One suggestion -

The panning of the scene to view the steps isn't really good. A better way is to make a box, then place two lasers facing it. On the first laser, set activation button to the right arrow key, and on the second, set activation on the left arrow key. In the script menu of the first laser, in the 'onLaserHit' type in (e)=>{scene.camera.pan = scene.camera.pan + [0.05, 0]. On the second laser in the same entity type in (e)=>{scene.camera.pan = scene.camera.pan - [0.05, 0]. Use left and right to "pan" the scene. HOPE IT HELPS!

ok,
im glad to see you again,i ll try thank you!

oh, and where did you learn all those things you put in scenens?!! please tell me!!!
or, can you do a tutorial??

Hm, I think that is short. Maybe you can make a ball game that let's you allow to use up to fly.