The Thorn Spring is a recurring gimmick that appears in the Sonic the Hedgehog series. It is a hazardous variant of the Spring which has spikes equipped on the bottom.


The Thorn Spring is a floating object with a modern Spring on top and a metallic cup on the bottom which surface is covered in spikes. In gameplay, the Thorn Spring flips itself upside down for a short while in fixed intervals, making either its top or bottom point upward. The player can either touch them normally or target them with a Homing Attack.

When touching the Thorn Spike while the Spring-side is up, it works like a regular Spring. If the spike-side is up though, the player will take damage upon touching it. Using this gimmick properly is thus based on timing.

Game appearances

Sonic and the Secret Rings


The Thorn Springs in Sonic and the Secret Rings.

In Sonic and the Secret Rings, the Thorn Spring has the iron ball as its bottom, and the Spring rests on a black sphere that separates the top and bottom.

Certain Worlds feature unique variations of the Thorn Spring. In Pirate Storm, there are Thorn Springs that only flip once and never turn back up. Then there is the Skeleton Dome, where some Thorn Springs either do not flip at all or are constantly flipping. The latter's movements make them virtually impossible to use.

Sonic Unleashed

The Thorn Springs first appeared in the in Xbox 360/PlayStation 3 version of Sonic Unleashed. In this game, they are only found in the daytime Action Stages. They are also not very common, only appearing in Jungle Joyride Act 1 and a few non-obligatory Acts.

Sonic Colors

In Sonic Colors, the Thorn Spring only appears in the Wii version of the game.

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