- This article is about the item in Competition mode. For the Monitor power-up with the same name, see here.
Changes (チェンジ Chenji?) are red and blue colored items that only appear in Competition mode of Sonic the Hedgehog 3 and Sonic the Hedgehog 3 & Knuckles. One change orb is inside a bubble that floats and rotates around at one point of the competition zone with a ring for example. Collecting it in the air will change the item into the item that the other player has at the moment. Change doesn't work if the other player doesn't have a ring, speed-up shoes or slow-down shoes in use at the same time.
Main articles (Sonic 3, Sonic & Knuckles, Sonic 3 & Knuckles, Sonic & Knuckles Collection) | Gallery (Sonic 3, Sonic & Knuckles, Sonic & Knuckles Collection) | Beta elements (Sonic 3, Sonic & Knuckles) | Staff (Sonic 3, Sonic & Knuckles, Sonic & Knuckles Collection) | Glitches (Sonic 3, Sonic 3 & Knuckles, Sonic & Knuckles Collection)
||Sonic (Super Sonic, Hyper Sonic) | Tails (Super Tails) | Knuckles (Super Knuckles, Hyper Knuckles) | Dr. Robotnik | Mecha Sonic (Mecha Sonic's Super State) | Animals (Flicky (Flicky's Super State), Pocky, Pecky, Cucky, Ricky, Rocky)
||Batbot | Blaster | Blastoid (Carnival Night Zone) | Blastoid (Hydrocity Zone) | Bloominator | Bubbles | Bugernaut | Butterdroid | Catakiller, Jr. | Chainspike | Clamer | Cluckoid | Corkey | Dragonfly | EggRobo | Fireworm | Flybot767 | Hyudoro | Iwamodoki | Jawz | Madmole | Mantis | Mega Chopper | Monkey Dude | Mushmeanie | Orbinaut | Penguinator | Pointdexter | RhinoBot | Ribot | Rock'n | Sandworm | Skorp | Snale Blaster | Spikebonker | Spiker | Star Pointer | Technosqueek | Toxomister | Turbo Spiker
||Angel Island Zone | Hydrocity Zone | Marble Garden Zone | Carnival Night Zone | IceCap Zone | Launch Base Zone | Special Stages | Bonus Stages
|Sonic & Knuckles
||Mushroom Hill Zone | Flying Battery Zone | Sandopolis Zone | Lava Reef Zone | Hidden Palace Zone | Sky Sanctuary Zone | Death Egg Zone | The Doomsday Zone | Special Stages | Bonus Stages
||Azure Lake Zone | Balloon Park Zone | Chrome Gadget Zone | Desert Palace Zone | Endless Mine Zone
||Doctor Robotnik’s Flame Craft | Doctor Robotnik’s Whirlpool Machine | Tunnelbot | Self D-Struct Machine | Iceball | Swing’m Spikez | Hei Hou | Gapsule | Barrier Eggman | Guardian | Heat Arms | Egg Mobile-H | Flying Eggman | Red Eye | Death Ball
||Doctor Robotnik’s Flame Craft | Doctor Robotnik's Waterspout and Depth Charge Machine | Doctor Robotnik’s Jet Drill Pod | Doctor Robotnik's Energy Ship | Doctor Robotnik’s Freeze-O-Matic | Ball Shooter | Beam Rocket | Big Arm | Jet Mobile | Hang Mobile | Egg Golem | Hot Mobile | Knuckles | Mecha Sonic | Mecha Sonic's Super State | Great Eggman Robo | The Doomsday Zone
||Bound Jump | Double Jump | Fireball Spin Dash | Glide | Gliding Knuckles Attack | Hyper Flash | Insta-Shield | Propeller Flying | Spin Jump | Spin Dash | Spin Attack | Wall Climb
||Air Bubble | Balloon | Banana | Bomb | Booster | Bumper | Bumper wall | Cannon | Capsule | Change | Chaos Emerald | Cloud | Continue | Fan | Jump Stand | Monitor (Water Shield, Flame Shield, Invincibility, Lightning Shield, Super Ring, Super Shoes, Extra Life, S, Eggman) | Movable box | Mushroom | Pulley | Ring | Signpost | Self-Propelled Bomb | Slow-Down Shoes | Snowboard | Sphere | Spikes | Spring | Spinning Top | Star Post (Star Circle) | Super Emerald | Switch | Transport | Vine | Zip Line
||Angel Island | Barrel | Blue Knuckles | Conveyor Belt | Corkscrew loop | Crusher | Debug Mode | Fireball Cannon | Flipper | Flywheel | Freeze | Giant spear | Goal | Gravity Control Switch | Gumball | High-speed elevator | High-speed warp tube | Icicle | Iron ball | Jewel Radar | Perfect Bonus | Platform-raising Wheel | Pole Elevator | Relief | Reverse | Ring Shooter | Rock Drill | Seesaw | Shuttle loop | Slot machine | Snowblower | Sonic & Knuckles • Sonic the Hedgehog 3 | Strange Relief | Time Attack | Tornado | Warp Point | Winding Tunnel | Wonderman