This hacks’ simultaneous 2 Player utilizes the game engine seamlessly, with both players needing to consent to travel down a vertical pipe to maintain the flow, then allowing one player to leave a horizontal while waiting for the other.

Mario & Luigi’s Firepower suit has an extra palette for Mario which is a tone darker.

Different to modern simultaneous Super Mario Bros, this ROMhack does not include “bubble feature” or a hurry up function for players too slow to enter a pipe, further on if one player dies they do not respawn.

For the best experience I recommend playing with someone with some veteran knowledge as if the player struggles alone in the game then they may slow down a more able player.

Overall Rating: ★★★★★