Super-Speed Stage

File:Kingdomval.jpg

The Mach Speed section in Kingdom Valley.

Mach Speed sections are a feature exclusive to Sonic's gameplay in Sonic the Hedgehog (2006 game). The game engine itself drives Sonic forward at breakneck pace, leaving the player only in control of left/right movement and jumping.

Mach speed occurs four times in Sonic '06, at the end of the levels:

• Wave Ocean, pursuing Doctor Robotnik's Egg Carrier,
• Crisis City, evading a car-throwing fire cyclone,
• Radical Train, chasing after Robotnik's locomotive,
• Kingdom Valley, rushing towards Aquatic Base.

These sections were notoriously difficult to control for many players. Crashing into any obstacles at all would result in Sonic losing rings - and often send him careening right off the side of the level - which would thwart many efforts to achieve an S-rank on a stage.