Bonus level

The Bonus level is an extra level that appears in Sonic Runners Adventure. The player can access it by obtaining a Bonus item before completing a level.

In the Bonus level, the playable character flies through an empty space where the goal is to collect as many Rings as possible before the level ends.

Overview
The Bonus level is a purplish black-blue space dotted with numerous stars in different colors. The upper and lower edge of the level is covered in purple and bluish gas clouds.

Gameplay
Upon passing a Goal Plate with a Bonus item in the playable characters' possession, the player is automatically sent into the Bonus level. Within the Bonus level, the playable character is surrounded in a multicolored area and flies forward nonstop. The entire level is free of obstacles and enemies, meaning the player can move around to their heart's content.

Along the way, the player will come across various clusters of Rings and Super Rings in certain formations, which the player can pick up to rank up their score and spent on unlocking further contents in Sonic Runners Adventure. A Bonus level last for about 15-25 seconds before it automatically ends and returns the player to the Result screen.

Trivia

 * Many of the Ring clusters in the Bonus level are shaped like certain objects, such as arrows, and some even spell out words like "NICE" and "RINGS". In fact, the end of a Bonus level is normally marked with a Ring cluster spelling out a word.