Mario Bros Adventure Land
Thrid attempt at this I think I've fixed most of the things mentioned in the removal log including the orange background
This hack is currently 7 levels long and should work on most emulators
Your hack needs a lot of improvement level design-wise, it was full of major level design issues such as:
this is when you have a segment with few or no enemies arround, a good example of this is the part where I have to run over the P-switch blocks at the end of "Over the top", but there were segments like this in every level of your hack. Note that this also counts the star and grey P-switch runs. You can avoid this by making enemies appear more often in your levels.
This is when you place an enemy that causes no trouble at all to the players, they can easily be jumped over, this is mostly an issue in the first level, but it also happened a lot arround your hack. You can avoid this by making Mario face more than one enemy at the time and combining enemies to make new obstacles.
This is when you have a segment that repeats itself or at least a very similar version of itself; the best example would be the spike top segment at the begining of "over the top", but again, this issue can be found pretty much everywhere in your hack. You can avoid this by not copy-pasting parts of your levels.
This is when the player has to run straight forward on a vertical platform, it's more notable on "hurry" but it also happens in almost every other level (it was less common in the final levels). Having flat areas makes your levels feel more repetitive than what they already are, try using slopes, pipes, pits, bridges and other objects to avoid this.
Leaving level design aside, your overworld wasn't the greatest either, it was completely flat and undercoated and the level tiles were revealed even if I couldn't access them. Also there were a couple of minor issues I adivise you to fix:
-In the first level, some enemies can fall into the lava because you placed it right next to the FG, move the lava one tile down to fix that.
-The credit level was unecesary as it was slow, and letters made out of castle blocks can be really hard to read.
As many other hacks, yours needs better level design. I advise you to play some recently accepted hacks
so you can get an idea of what we're expecting.