Sonic the Hedgehog: The Lost Worlds
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Sonic the Hedgehog: The Lost Worlds


Sonic the Hedgehog – The Lost Worlds features all of the zones┬áthat were cut from Sonic 2 during development, and some have been created based on magazine pictures and information from interviews with people who worked on Sonic 2.


  • Dust Hill Zone
  • Rock Zone
  • Wood Zone
  • Winter Zone
  • Hidden Palace Zone – Background music is the intended music for the level. Mystic Cave boss is used with the only alteration that the sequence of picks and rocks is omitted. Also, the bat badniks are utilized, which ended up being unused in the final Sonic 2
  • Casino Night Zone (Sonic 2 Beta style)
  • Cyber City Zone

How to Play

Player 1 (Default Mapping)
Inside The Game Your Keyboard
A, B, C Button =[J],[K],[L]

How to Save: Hover over the game canvas. A save button will appear at the top of the game screen. When you click "Save" button, the save code (spot) will be saved onto your browser's storage system automatically.

How to Load: Come back anytime in the future, simply click "Load" to resume from your latest save spot. (Assuming you did not clear your browser' data.

CAUTION:: Browser's private mode WILL NOT retain your save state, because save state is deleted once the browser is closed, so don't use private mode if you want to use the save state.

Recommended Browser: Chrome

How to Play:

Play Sonic the Hedgehog The Lost Worlds Online Game. One of many Sonic Games to play online on your web browser for free at KBH Games. Play Sonic the Hedgehog The Lost Worlds using a online Sega emulator. Tagged as Action Games, Adventure Games, Arcade Games, Platformer Games, Retro Games, Sega Games, Skill Games, Sonic Games, and Sonic The Hedgehog Games. Upvoted by 429 players. Other games you might like are Cream and Cheese in Sonic the Hedgehog and Sonic the Hedgehog (Prototype). No download or installation needed to play this free game. Hope this game brings a little joy into your daily life.