Originally posted by 1UPdudesI started to hack SMB1 with mario utility and need some ideas ...
I have not NES emulator so I play not any hacks of SMB1, but I can give ideas.
Goomba Stage: Create a stage where the primary enemy is the Goomba. Have many Goombas but no Koopa shells. Spawn Goombas on high platforms so that they try to fall on Mario. Put Goombas in two-block-high passages so Mario has less room to jump on them. Have Lakitu throw Goombas instead of Spinies, if someone knows how to do that. Then when Mario plays the stage, he stomps all the Goombas to prove again that they are such weak enemies.
Bonus in Bonus: Make an underground bonus room, which has a hidden brick block with a vine that goes up to another bonus room. I am not sure if this is possible.
Warp Zone in Bonus: Make a scrolling underground bonus room, but if Mario goes over the exit pipe, then he finds a warp zone like in the original World 1-2. I am not sure if this is possible in a bonus room.
Powerup Bonus: Put a powerup ? block in a bonus room so that Mario needs to visit the bonus to get the Mushroom or Fire Flower. No powerup if Mario skips the bonus.
Another variation is to have a place where Mario needs to break brick blocks to continue. If Mario is not Super, then he enters the pipe underneath the brick blocks to visit the bonus. The bonus only has a Super Mushroom and an exit pipe, but the exit is to earlier in the level. So Mario tries to survive as Super Mario while replaying part of the level to reach the brick blocks.
Special Level: World 3-4 is an easy level with more coins and 1-up mushrooms than normal. The problem is that in world 3-3, the warp zone to world 4-1 is easier to find than the flagpole to world 3-4. This idea might not work if you want 3-4 to be the usual kind of castle, or if the game does now allow warp zone in 3-3.
Edited Text: Edit the text, so that after you defeat Bowser and rescue the Toads, they something other than the classic princess-in-another-castle line. "I wish that I was a princess."