Materials

Materials are collectible substances used to construct naval vessels, RC Vehicles, buildings, and other related purposes. These objects first appeared in Sonic Rush Adventure before returning in Sonic Lost World. In the games, materials is automatically obtained after the player clears an Act/Stage or defeating a boss. The amount of materials the player gets from completing these tasks is solely depending upon the Rank. These items also come in different shapes and colors, which is corresponds to each Stage.

In Sonic Rush Adventure

In Sonic Rush Adventure, Materials play a prominent role in the game. With a book provided to him by Marine the Raccoon, Tails learns of a technology to create navy vessels and other constructions by combining materials. After he gained understanding of the technology, Tails successfully created these to help the others traverse to different islands. There are a total of nine different types of Materials in the game.

Colors/Types	Description
Blue Material	Blue sapphire-like crystals; found at Whale Point and most hidden islands.
Iron Material	Large chunks of greyish metal, (maybe iron hence the name); found at Whale Point and most hidden islands.
Green Material	Green rocks, probably originating from plants with spiral patterns; found in Plant Kingdom.
Bronze Material	Rusty hexagonal-shaped metal pieces; found in Machine Labyrinth.
Red Material	Red spiked shards of crystalline coral growing on rocks; found in Coral Cave.
Silver Material	Shield-shaped ingots with electromagnetic properties; found in Haunted Ship.
Aqua Material	Spiky chunks of cyan frozen ice; found in Blizzard Peaks.
Gold Material	Nuggets of gold-like substance; found in Sky Babylon.
Black Material	Orbs of a mysterious black substance. They are similar in appearance to cannonballs. Useful for upgrading ships; found at Pirates' Island and Big Swell.

In Sonic Lost World

In the Nintendo 3DS version of Sonic Lost World, Materials are used by Tails to create RC Vehicles and/or "upgrading" Tails' Lab (which is essentially making the lab bigger in size). There are a total of ten different types of Materials in the game.

Colors/Types	Description
Green Material	Found in Windy Hill.
Yellow Material	Found in Desert Ruins.
Blue Material	Found in Tropical Coast.
White Material	Found in Frozen Factory.
Iron Material	Found in Silent Forest.
Black Material	Found in Sky Road.
Red Material	Found in Lava Mountain.
Bronze Material	Found in all levels, Special Stages, and final boss in Lava Mountain.
Silver Material	Found in Special Stages and final boss in Lava Mountain.
Gold Material	Found in Special Stages and final boss in Lava Mountain.