The working code I found for Troll IQ Tower on Roblox is UPDATE. It’s listed as the current code in recent guides, but some sources also note it may have expired already, so it might not work anymore.

How to redeem it

  • Open Troll IQ Tower in Roblox.
  • Go to Settings or the Gear menu.
  • Select Codes.
  • Enter UPDATE and tap Redeem.

What to expect

  • If the code still works, it should give a Go Back token.
  • If it fails, the game likely has no active codes right now according to other recent sources.

Extra note

Some results also point to “IQ Test” style Roblox tower guides, but those are different from Troll IQ Tower and have separate stage answers and codes.