So that you do not get confused between version 1.0 and 1.1, here are the changes:
1.0 no intro screen 1.1 Super Mario World is added
smb: with A you can go to the sky in one jump, the time is always in 700 seconds, there are infinite jumps, the pipes are reversed, the invincibility time is greater, life is always in 5 , you can achieve the glitch of freezing time (jumping after dying) which in version 1.1 can only be done in SMB: TLL. You can not go through walls, when you catch a mushroom you no longer become a star mario in version 1.1 when the time reached 000 it was reset to 999, this does not happen in version 1.0.
SMB: TLL: in version 1.1 when hitting an enemy you gained a life, not here. But there are infinite coin blocks that were not in version 1.1. In version 1.0, when doing the glitch to freeze the time, a graphical bug is shown in time this graphical bug does not appear in version 1.1, the same with the time in SMB, in version 1.0, making the time glitch the time already it does not decrease, in version 1.0 yes, in version 1.0 when doing the time glitch the punctuation of touching a coin stays frozen unless you touch more coins. The pipes are reversed in version 1.0, in 1.1 not.
SMB2: In version 1.1 there was a Glitch that made if you take out 3 pows quickly they would stagnate and kill any enemies that approached them, in version 1.0 Birdo sometimes turns his head, which in version 1.1 does not happen . In the battles with Birdo in version 1.1 she gets inside the wall causing him to kill himself, which in version 1.0 does not happen.
SMB3: All levels without inaccessible so if they send a race that is in version 1.1
SMW: No changes even though SMW is added in version 1.1