Instead, you get to choose which world you start in from the title screen. The most major change was the removal of the save system. The version of Super Mario World released for the Nintendo Super System got some minor tweaks to fit better as an arcade game.The author is L0st If he wants me to take this down i will Link to this hack's entry on the Sonic. Due to Eggman's limited controls most levels aren't able to cleared. A rom hack of Sonic 1 That makes you play as Dr.For those unaware of the term, this is essentially where existing assets from a game are.