A blue switch[1] is an object in Mario & Luigi: Partners in Time. It is an item found in areas throughout the game, and all party members must stand on it in order to progress. It has a rarer variation, the yellow switch, which functions similarly to the blue switch, except only Mario and Luigi need to stand on it in order to activate it.
References
- ^ "Using all four team members, you can stand on the large blue switches to open doorways." - Hoffman, Chris. Mario & Luigi: Partners in Time Official Nintendo Player's Guide, page 18.