Foldit is an online game in which humans try to solve one of the hardest computational problems in biology: protein folding. You don't need to know anything about biology to play the game, although a little background will help. Most Foldit player are not biologists. Read about The Science Behind Foldit.


In response to the global pandemic, Foldit has been coronavirus puzzles of various types.

The puzzles so far have involved designing binder proteins to attach to the Coronavirus Spike protein and prevent infection, designing binder proteins to combat an anti-inflammatory response that can calm the "cytokine storm" sometimes triggered by the virus after infection, and predicting the 3D structure of proteins the virus is believed to manufacture, with names like NSP2, NSP6, and ORF3a.

There will probably be coronavirus puzzles running for the foreseeable future, see the official list of puzzles for details.

See the Coronavirus FAQ for general information about the Foldit coronavirus puzzles.

New Players

Visit the, the official Foldit site to download the game and get started. Foldit runs on Windows, Mac, and 64-bit Linux. See Download-Install-Troubleshoot for install instructions. Use the feedback page if you're having trouble getting the game installed. If you're seeing "error contacting server" messages, update this feedback with details.

The Intro Puzzles show you the tools, try them before trying a science puzzle. (deutsch) | (svenska)

The video QUICK Foldit Tutorial Walkthrough from S0ckrates shows the fast path through the intro puzzles.

See Get Started Playing Foldit for more background.

Foldit's education mode features a series of puzzles that go into much more technical depth than the regular intro puzzles. (Education mode involves installing a separate version of Foldit, see For Educators on the Foldit web site.)

Please read the Foldit Community Guidelines and Terms of Service.

See Foldit Status for any issues affecting the game.

What's folding

Note: this list gets updated weekly after the last puzzle expires. See the official list of puzzles for the most current puzzle info.


  • Aflatoxin! The aflatoxin challenge returns in Puzzle 1902: Aflatoxin Challenge: Round 18 Loop Prediction, which challenges players with a design from Puzzle 1739, only this time without the aflatoxin being present.
  • Metrics system: the binder metrics are described in an updated blog post, Introducing Foldit Metrics. The Foldit Lua Functions page has been updated with three new "metric" functions found in the current devprev release: metric.GetNames, metric.GetBonus, and metric.GetBonusTotal. These functions work with the DDG, SASA, and shape complementarity metrics. At the moment, the new functions only work in the devprev puzzle LCB1 Binder with Metrics.
  • Discord comes to Foldit: A new Discord server gives players a new spot to hang out. Discord is oriented toward online gaming, and offers many features not found in IRC chat. In addition to basic text chat, Discord has voice chat and even screen sharing options. Discord has apps for Windows, macOS, Android, and iOS, and also offers web access. Discord users can be connected on multiple platforms at the same time. Messages on Discord persist, so offline users can catch up later.
  • Deep thoughts: a Foldit blog post describes the upcoming energy landscape optimization paper and provides a link to the pre-print version. Foldit players have a chance to be listed by name in this paper, a gracious concession from the robot overlords.
  • Chillin': the Foldit Cryo-EM paper has been published in PLOS Biology. The Foldit blog makes you scroll down before announcing Foldit players take gold!. Once again, Foldit players beat actual scientists. The paper's supplement (docx format) contains commentary from several Foldit players on how they did it.
  • Free proteins: the four five solved Foldit designs are available in all their 3D glory in the PDB. Four of the five are discussed in the Foldit protein design paper.
  • Nurture versus Nature: De novo protein design by citizen scientists, describing the results of Foldit design puzzles, was published in Nature 5 June 2019. Five Foldit players are listed as named authors, along with "Foldit Players". A longer list of players appears in the "Supplementary information" section. See the Foldit blog post about the paper. Congratulations to lead author Brian Koepnick!
  • Closely contested: Foldit now lets you bring your own protein with custom contests. This feature has been frequently requested for classroom puzzles. We'll have more about it on the wiki soon, in the mean time read the paper describing how it works.
  • Naming names: a number of Foldit players are listed as authors (using their real names) on an article just published in Nature Scientific Reports. See Interesting Articles (under "contribution of Foldit players to scientific results") for a complete list and a link to the paper.


David Baker (U

David Baker (U. Washington HHMI) Crowd Sourcing Protein Folding Rosetta@Home and FoldIt

Tools, tips, techniques

Several translations of the Foldit Wiki are available:
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Featured articles

Contents   ( View All Pages - Foldit Wikia Index )

Foldit 1583469164 trimmed

Image credit: silent gene

Players can submit screenshots of their best or most interesting results using the camera button in chat. The Foldit wiki has thousands of these images. See recent puzzle results and older results for a complete list. See posting results for tips on how to post.

The Science

These pages describe the science of protein folding.

Helping out

This is a wiki about the Foldit game that anyone can edit. Before you do edit it, however, please take a look around and determine whether or not the article you'd like to write already exists. (If it does exist, feel free to make it better!)

To write a new article, just enter the article title in the box below.

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  • Check out the community portal to see what the community is working on, to give feedback or just to say hi.
Community content is available under CC-BY-SA unless otherwise noted.