Room 1-SP+ (titled Room G-SP+ in the British English version) is the Special Level in the Plus Mode version of Mini Mayhem in Mario vs. Donkey Kong: Minis March Again!. It is unlocked once all lettered Mini Mario Cards are collected on this floor.
The course features four mini toys.
Two pairs of minis start facing a grid of Pink Blocks in the middle of the course, each pair on one side of the grid. The Goal Door is a level lower on the bottom left, but a Circus Kong will throw the minis back upward if they approach the door simply. The player has to guide the minis to one of the Hammers present in the course and then bring them to the Circus Kong to attack it and gain passage to the Goal Door.
One of the closest pairs of Hammers is found inside the grid of Pink Blocks in the middle. The minis can simply walk up there on Pink Blocks and fall down to the same level as the Circus Kong shortly after.
Another pair of Hammers is located in an area in the bottom right, separated from the left portion with a short ledge. The player can guide the minis from their starting positions to the right side of the course, where they will fall through a small gap into said area. Picking the Hammers up, they will soon fall off the ledge and head towards the Circus Kong.
Mini Mario Card
The Mini Mario Card is in the top right. The player needs to use Pink Blocks to guide the minis to the pair of Hammers in the center of the course and then further to the right into a passage with two Shy Guys. After attacking the Shy Guys and passing them, the minis will encounter a Yellow Spring that will bounce them to the platform with the Mini Mario Card.
The M-Token is in the top left, in an indentation with a Shy Guy. The player must use Pink Blocks to guide the minis to a yellow Box Spring on the left side of the course, then use this Box Spring to bounce the minis up onto a girder platform with a pair of Hammers. The minis will soon walk into the Shy Guy and destroy it with the Hammers while safely collecting the M-Token.