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Rock Zone is a scrapped zone from the game Sonic the Hedgehog 2. During the beta development of Sonic 2, when time travel was planned to exist, (which was later re-worked for Sonic the Hedgehog CD) this level was supposed to be the past version of another scrapped level, Dust Hill Zone. Aside from this, there is very little information about the zone.
Main article | Gallery | Staff | Prereleases (Nick Arcade | Simon Wai) | Re-releases (2006 | 2013) | Knuckles in Sonic 2
||Sonic (Super Sonic) | Tails (Super Tails**) | Knuckles (Super Knuckles) | Dr. Robotnik | Animals (Becky, Cucky, Flicky, Pocky, Pecky, Cucky, Ricky, Pecky, Picky, Rocky, Locky, Wocky, Rat, Tocky)
||Aquis | Asteron | Balkiry | Banper* | BBat** | BFish* | Bubbler* | Bubbler's Mother* | Buzzer | Cactus* | Chop Chop | Clucker | Coconuts | Crawl | Crawlton | Flasher | Frog* | Gator* | Gohla | Grabber | Grounder | Jellies** | Lobster* | Masher | Nebula | Octus | Rexon | Shellcracker | Slicer | Snail* | Spiker | Spiny | Stegway** | Turtloids | Redz** | Whisp
||Emerald Hill Zone | Chemical Plant Zone | Aquatic Ruin Zone | Casino Night Zone | Hill Top Zone | Mystic Cave Zone | Oil Ocean Zone | Metropolis Zone | Sky Chase Zone | Wing Fortress Zone | Death Egg Zone | Hidden Palace Zone** | Genocide City Zone* | Dust Hill Zone* | Rock Zone* | Wood Zone* | Egg Gauntlet Zone** | Boss Attack Zone** | Proto Palace Zone** | Special Stage
||Drill Eggman | Water Eggman | Tonkachi Eggman | Catcher Eggman | Submarine Eggman | Drill Eggman II | Hidden Palace Zone boss** | Submarine Eggman II | Flying Eggman | Barrier Eggman | Mecha Sonic | Death Egg Robot
||Climb | Glide | Insta-Shield** | Propeller Flying | Spin Jump | Super Dash Attack | Super Spin Attack
||Ring | Monitor (Super Ring, Shield, Power Sneakers, Invincibility, Extra Life, Teleporter, Eggman, Lightning Shield**, Flame Shield**, Water Shield**, S**) | Continue | Spring | Star Post (Star Circle) | Bumper | Switch | Air Bubbles | Signpost | Capsule
||Bomb | Booster | Original Soundtrack | Bumper wall | Cannon | Chaos Emerald | Conveyor Belt | Corkscrew loop | Crusher | Debug Mode | Egg Jet | Fan | Flipper | Giant spear | Gondola | High-speed elevator | High-speed warp tube | Mega Mack | Metal nut | Perfect Bonus | Pinball Shooter | Seesaw | Shuttle loop | Slot machine | Spiked ball | Spikes | Stone pillar | Tornado | Totem pole | West Side Island | Winding Tunnel
*Exclusive to the prototype versions of Sonic the Hedgehog 2.
** Exclusive to the 2013 re-release version.