Propeller Spring

Propeller Spring  is a gimmick that appeared in ''Sonic Adventure 2. ''It is an airborne version of the Spring that is used for high areas transportation.

Description
Propeller Spring is a light brown spring with a star that is on blue circular in the spring surrounded by green arrows that to the Propeller Spring. In gameplay, it's main use is to gain heights in air by bouncing on it using the Homing Attack until it reaches it's end range. Propeller Spring must be dodged continuously or it will fall down. It can also be used without homing on it, but it will not activate it's propeller however.

Sonic Adventure 2
In Sonic Adventure 2 and Sonic Adventure 2: Battle, it appeared in the stage Sky Rail where it is the most used gimmick in the stage. To use it in gameplay, the player has to use the Homing Attack on it several times, continuously but not too much to avoid Homing attacking outside the Propeller Spring and avoid being hurt to prevent the spring from falling down.

Sonic Generations
In Sonic Generations, it is like the regular spring with white propeller blades that rotate frequently. It can be used by the Homing Attack or the Stomp. It should be noted that the Homing Attack mechanism is changed when using this spring as instead of homing horizontally like always, Sonic will do it vertically. It can only be encountered in the Challenge act 200% Boost Gauge Challenge.