|Spring Yard Zone|
An urban, pinball-like zone
It is an urban level with many springs and bumpers, resembling a pinball machine. There are many secret areas in this zone. This zone's design inspired many similar stages in future Sonic games. Act 2 has two Robotnik signs (ends) and as such, can be ended through two possible routes (one of the only two levels in Sonic history with more than one exit, the other being Collision Chaos Zone 2 in Sonic CD). At the end of Act 3, Dr. Robotnik attacks with a spike-equipped craft that slowly removes the blocks Sonic stands on. Spring Yard Zone (or Sparkling Zone) was the first zone created and finished.
The Spring Yard appears as a track in the game Sonic Drift, alongside other Sonic 1 Zones.