In this hack, Mario only has 100 seconds (or less) to beat the level!
Features:
-Mario All-stars graphics(also few backgrounds for other games)
-Tons of custom music
-Bunch of custom blocks, sprites and patches
-Custom powerups(hammer, boomerang, raccoon(+cape), ice flower, tanooki suit, shell suit..)
-Death counter(you have unlimited lives)
-Auto-saving
-Overworld examination
-Wall-jump ability
-Fully works on real hardware
-Four worlds and ???
-88-Exits in total(~56 actual levels)
-Its also challenging if you cant tell from the title
Update F2.1 Changes:
-Fixed up more glitches with custom powerups.
Super Mario World (U) [!].smc - GOODSNES 2.04
CRC32: B19ED489
MD5: CDD3C8C37322978CA8669B34BC89C804
SHA-1: 6B47BB75D16514B6A476AA0C73A683A2A4C18765
SHA-256: 0838E531FE22C077528FEBE14CB3FF7C492F1F5FA8DE354192BDFF7137C27F5B