Spiky Stardust Defense System

The Spiky Stardust Defense System in Mario & Luigi: Superstar Saga
The Spiky Stardust Defense System
“Disturbing Facts Uncovered in Area 64! Recent studies show that the Spiky Stardust Defense System (SSDS) can be jumped! It's easy! Just run, press the A Button Button and then immediately press the B Button Button! Such a defense gap is apalling[sic]! Improvements are demanded to prevent an increase in intruders!”
Sign, Mario & Luigi: Superstar Saga

The Spiky Stardust Defense System, also abbreviated to SSDS, is an obstacle in Mario & Luigi: Superstar Saga. It is only found in Stardust Fields, serving as an early tutorial for using Mario and Luigi's jumps in tandem. The obstacle is made up of a series of glowing spikes that extend from one side of the ground to the other. If either Mario or Luigi lands on it, both of them are sent flying back to just before the obstacle.