I got some quiz in the level editor...
1. when u want to create some shapes using BG only u can go with only a limited amount of pixels. but on some levels, some people are using walls or backgrounds with a very different scale which allows them to create smaller pixels instead of having big pixels...
2. there are some maps that use movables that keep moving right and left or up and down infinitely, I know how to make movables but not making them moving from right to left and up and down with looping... (plz give free open-source map if u can)
I would appreciate any useful support if my problem got solved...