Rolling Guy is a badly-drawn fanon online game similar to Katamari.
The player takes control of a sphere-like person named "Roll". Roll must collect everything, and those things that are collected are put in "Circle Collectors", which are glass flying spheres. The more you collect, the more progress the game goes.
The collected items go inside a jar, and below the jar is a number listing how many things you collected. If you click on the jar, you go inside the infinite jar where the objects you collected are inside. If you click an object, it will give you the name of it and the number of it.
There is also a "Detector Circle", which is "attached" to the upper-left corner of the computer screen. It displays the name and picture of the nearest collect-able item.