Sonic the Hedgehog 2 (8-bit)/Bugs

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Level-specific bugs

Sky High Zone

Stand in the bottomless pit

In Sky High Zone Act 1, if the player breaks the Invincibility Monitor at the top of the Act and drops down into the bottomless pit that they must glide over with the Hang Glider, they can walk along the bottom of the pit. Once the Invincibility wears off, however, they can continue to walk along the pit safely until they jump and thus take damage from the hidden spikes in the pit. This behaviour is only in the Master System version of the game.

Fixed in the Game Gear version. The player takes damage immediately after the Invincibility wears off.

Respawning 1UPs

Roll into this 1UP...

Then bounce on this spring...

Stop and backtrack here...

...and another 1UP appears!

In Sky High Zone Act 2, there is a 1UP Monitor located at the bottom near the beginning, which the player can find by dropping down the cliff at the start. If the player rolls off the ledge to the right of the monitor, bounces off it, bounces off the Spring to the left of the Monitor, then stop and backtrack after passing the Spring to the right, another 1UP Monitor will spawn. The player can repeat this process multiple times to essentially amass an infinite number of lives.

This glitch only exists in the Game Gear version of the game. The smaller screen of the Game Gear, combined with the added momentum, essentially tricks the game into not processing the action. Therefore, the extra life respawns, but the lives counter increases, even though it maxes out at nine on-screen. It cannot happen in the Master System version due to the larger screen size, meaning the player cannot leave the area off-screen fast enough to trick the game.

Not fixed in any version.