Treasure Chest

The treasure chest is an object that appears in Sonic Rush Adventure and Sonic Generations (3DS version).

Description
The treasure is colored light brown (with a touch of yellow flames), yellow and purple in the edges, with red small jewels at the tip. Instead of a lock, it closes with a tether.

Sonic Rush Adventure
Sonic Rush Adventure marks the first appearence of the treasure, it's the replacement of the Goal Ring. They appear in all the stages (except in bosses) at the end of their Act, it can be opened by jumping or boosting on it. Once this, it rotates and then opens, so it shows a sparkling aura with shinning sparks in the air, showing the results to the player.

Treasures contain materials (depending on the stage act that you finished, it will be different) and coins (although there were not give you any reward or points), depending of the rank that you get the amount will be different. Treasure chest content varies depending on the occasion; it contains the three symbols (separately) to access into Pirates' Island. They also contain Medals instead during Marine's fourteen search missions, so the treasure fate will change to difficult places to access.

Sonic Generations (3DS)
In this game, the treasure only appears in the Nintendo 3DS version, it's the counterpart of the Collection Room; you can select events, music, concept art, and models (that they can be unlocked automatically by clearing missions). The tresure chest design is very similar to those ones from Sonic Rush Adventure.