Sonic the Hedgehog 2 / GAME HISTORY

Sonic 2’s Signpost Softlock Was Fixed in REV02

Sonic Retro records the end-of-level Super Sonic softlock as fixed in REV02.

By Patchlo Editorial Desk · Published October 28, 2026 · Sources checked October 28, 2026

Scope: Sonic the Hedgehog 2, 16-bit revisions, as cataloged by Sonic Retro. Modern collections must be checked individually.

Why reaching the finish did not finish the Act

The failure depends on where Sonic is when control stops. If he leaves through the right edge before becoming stuck, the score tally appears and play continues. If he remains on-screen, the level cannot complete normally.

Waiting for a time-out does not solve this case: touching the signpost has already stopped the timer. Sonic Retro describes resetting as the remaining option without debug mode.

The transformation sequence

The setup involves the original game’s Super Sonic transformation conditions, not simply jumping at any signpost.

1. Collect all seven Chaos Emeralds and hold at least 50 rings.
2. Pass the end-of-level signpost.
3. Attempt the jump-triggered transformation while Sonic is still on-screen.
4. In an affected revision, Sonic may remain suspended and unresponsive rather than exiting to the tally.

The capsule exception and later correction

Sonic Retro makes an important exception for animal capsules: they start the score tally automatically, so the level still ends. Treating capsules and signposts as identical permanent softlocks would miss this distinction.

The community catalog identifies REV02 as corrected. That revision label is more useful than assuming every re-release behaves alike: a compilation may use a particular old revision or a separate remake. The checked evidence is a community revision record, not a quoted Sega patch announcement.