You will need to find two invisible blocks in between two pipes with the Koopa Troop between them. From world 4-2 you can go to world 6, 7 and 8. If you continue walking you will reach an area of pipes where you can choose which world to go to.

To go to worlds 2, 3 or 4 from 1-2, go to the area with the platforms that go up and down and try to reach the top of the level. There are a few shortcuts in Super Mario Bros that will allow you to skip some of the more dangerous worlds and quickly advance through the adventure. Want tips on how to be the best in Super Mario Bros? Use them wisely and defeat all the enemies you encounter. The green mushroom will give him an extra life. The flower will give him the power to throw fireballs. You'll find 'power ups' around the stage that will make Mario more powerful. Use the X button to make Mario run around the stage, which will help you escape from enemies and make longer jumps. Use the Z button to jump by pressing a direction on the arrow pad to direct the jump. Use the directional pad on your keyboard to move Mario or make him crouch. It sold in 2020 for the comparably affordable price of “just” $114,000.This classic video game has very simple controls that nevertheless offer great gameplay. That title belonged to another copy of Super Mario Bros. That $660,000 winning bid destroyed the previous record for a video game. It’s rarity and unparalleled condition combined for a big final price tag. That’s the highest rating for any copy ever put up for auction. What also made this sealed game so much more valuable was its impeccable condition. Never say never, but there’s a good chance it can’t be done.” Since the production window for this copy and others like it was so short, finding another copy from this same production run in similar condition would be akin to looking for single drop of water in an ocean. “By early 1987, Nintendo was producing a version that had another new variation to their original packaging (an additional ‘code’). “This particular copy was produced in late 1986, and it was one of the earliest copies produced that had plastic shrink wrap, rather than sticker seal.” said Heritage Auctions Video Games Director Valarie McLeckie in a statement.

Original super mario brothers game