Box Springs are objects that appear in Mario vs. Donkey Kong: Minis March Again!, being introduced in Room 2-5 of Sandstone Stroll. They are contained in flashing green boxes found on the ground. When the player taps a Box Spring using the stylus, it briefly releases either a Yellow Spring or a Blue Spring, as indicated on the front of the box. If a Mini is directly above a Box Spring when it is activated, the Mini is launched into the air using the spring, either in an upward arc by a Yellow Spring or in a forward arc by a Blue Spring.
|Mario vs. Donkey Kong: Minis March Again!|
|Characters||Mario • Pauline • Donkey Kong • Toads|
|Minis||Mini Mario • Mini Toad • Mini Peach • Mini Donkey Kong|
|Floors||Mini Mayhem • Sandstone Stroll • Magnet Mania • Jungle Rumble • Rooftop • Basement|
|Items and objects||Blue Spring • Box Spring • Cannon • Clock • Coin (large) • Color Switch • Conveyor Belt • Door • Girder • Hammer • Key • Key Door • Ladder • M-Token • Magnet • Mini Mario Card • Pink Block • Pokey Block • Pop-up Gate • Rotate Pipe • Shy Guy Block • Spikes • Spin-bar magnet • Warp Pipe • Yellow Spring|
|Enemies||Monkey robots (Capture Kong · Circus Kong) • Bird • Piranha Plant (fire) • Pokey • Polterguy • Shy Guy • Snapjaw • Snifit • Thwomp|
|Miscellaneous||Media • Staff • Super Mini Mario World|