Yellow Materials take the form of thick yellow rectangular plates with a smaller rectangular recess in the middle. Despite the substance's apparent consistency, it is very versatile in building a number of devices.
In gameplay in the Nintendo 3DS version of Sonic Lost World, the Yellow Materials are used in conjunction with other Materials to create RC Vehicles. The player can earn Yellow Materials by clearing Desert Ruins' Zones. The Rank the player gets from clearing the Zones determines the amount of Yellow Materials earned:
|Rank||No. of Materials earned|
As an alternative to collecting Yellow Materials, the player can combine other Materials in Tails' Lab to create Yellow Materials. To create one Yellow Material, the player needs at least three Green Materials.