There is no official "unblocked" version hosted by the game's creator (PuffballsUnited / Innersloth). Any site claiming "Fleeing the Complex unblocked" is a third-party flash game archive.
Here’s a direct, helpful answer:
Buy the Henry Stickmin Collection – it's cheap, DRM-free on some stores, and supports the developer. If you can't pay, Flashpoint is the safest free option.
It sounds like you're looking for a way to play Fleeing the Complex (the sixth game in the Henry Stickmin series) on a device where it might be blocked, such as a school or work computer.
