Welcome, Survivor

What is LOST-Challenge?

Lost, the most fantastic TV-Show out there.

This site is a tribute for all fans of the show with some skills in:

  • Cryptography
  • Steganography
  • Programming
  • Reversing
  • Logic
  • Web-Security
  • Mathematical knowledge

The principle is based on the Level design, so you'll need some challenges solved until you can reach higher levels.

There are 6 different levels and one master challenge. The first challenges, those where you have access at the beginning are easy. Then it gets more and more difficult up the level-tree.

Not every challenge is 100% based on something that happened in that episode. Some parts are invented to make it harder, more interesting, or just to declare better what you have to do.

So, how does it work?

Terms of Service.

To use this site, you must agree to our Terms of Service

ToS »


If you have any questions regarding LOST-Chall - Ask in the forums

Forum »


So, what are you waiting for? Register and start the journey over the island.

Registration »

Contact: lostchall at gmail.com
Any donation will be appreciated!