CrowdPhase. An online game for solving the phase problem.

Welcome to the beta version of CrowdPhase!

Crowdphase is an online multiplayer game for solving the phase problem in X-ray crystallography. X-ray crystallography is a method based on X-ray diffraction for determining the molecular structure of materials that can form crystals. In biology, this can be used to solve the structure of molecules such as proteins, DNA or drugs.

How to play?
Create an account
1. Create an account
Signing up for your account will grant you access to the majority of the games proposed by CrowdPhase.You can Register for free.
Already have an account? Please login.
Join a game
2. Join a game
You can join one of the games currently running at any time.
Due to the evolutionnary nature of CrowdPhase, a game is "alive" even when you are away from the crowdphase platform, which means that the game will probably look different everytime you reconnect.
Pick two pictures
3. Pick two pictures
At each round of the game, Crowdphase will provide you with a set of pictures randomly sampled from a larger pool of pictures. The goal is to pick the two best (or "fittest") pictures from the sample according to several criteria and, most important, your intuition. Your two choices will serve as the parents for a picture of a new pool of pictures (or new "generation") that eventually will replace the initial pool.
About CrowdPhase/Citing:

If you're interested in knowing what is under the hood of CrowdPhase, or to simply cite us:
J. Jorda, M.R Sawaya and T.O. Yeates. CrowdPhase: crowdsourcing the phase problem. Acta Crystallogr D Biol Crystallogr. 2014 Jun;70(Pt 6):1538-48. [Open access] - [PubMed]