Bio-Ray Isle is the final level in the game Sly Cooper: The Thief Returns. The bosses here are L.A.R the Anaconda and Miss Sunscreen the Monitor Lizard.


  • Toxic Environment
  • Gas
  • Toxic Pools and Ocean that spew Gas Bubbles
  • Garbage Cans
  • Toxic Cans
  • Explosive Barrels
  • Le Paradox's Gas Barrels and Crates
  • Dead Trees
  • Dead Flowers
  • Bio-Ray
  • High Elevations
  • Brown Grass
  • Dead Fishes in the Ocean and carcasses
  • Fort Walls
  • Spotlights
  • Lasers
  • Cameras
  • Clue Bottles
  • Secret Sly Masks
  • Safehouse (A cave near the polluted beach)

Bio-Ray Isle is said to be one of the dangerous levels in the games. The place has a toxic environment that could suffocate the gang if they touch the gasses. The ocean and pools are filled with green toxic goo. Toxic cans, explosive barrels and Le Paradox's Gas Barrels and Crates are scattered around the level. Dead Trees, Dead Flowers, Brown Grass and Dead Fishes are located through the level too. The Bio-Ray is located on the top of the mountain. High Elevations are added to add more rooftops for the levels along with fort walls. Spotlights, Lasers, Cameras serve as security.



The music for the area is here. The fight music is a loud beeping noise played quite fast.

Pickpocket Treasures

  • 500~I <3 L.A.R Cup
  • 300~Rotten Apple
  • 100~Box of Peanuts

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