There's a graphics set from japanese Super Mario World-based game "Super Mario World YEAH!" [img]http://i54.tinypic.com/2hqxh03.png[/img]

I've never heard of "Super Mario World YEAH". Weird sprites. Are these really ripped?

I would image it's a ROM hack of the Japanese version of Super Mario World.

Its a Japanese ROM hack. These sprites are ripped straight from the hack, except the SMB3-SMAS Elite Koopas. Those are edits by me.

What do all the objects do?

Why don't you go on Youtube and look at some playthroughs?

[quote="superdimentiobros"]What do all the objects do?[/quote] The lumpy leaf thing is bouncy The arrow blocks are convayor belts The leek acts like a fire flower The cracked flip block breaks when you touch it The white block with the dots is a grab block The white carrot(?) is a hammer The round yellow blob is a slippery flip block The yellow castle(?) thing with a potato on it is just a block The brown sticky note gives you 5up The fish block makes you swim The white "spotlight" and those yellow "mustache blocks" stops you from swimming the rest of the stuff, I haven't gone far enough in the game to figure out.