Participating Challenge Sites

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ID Language Site Users Challs Average Dif Fun Description
47EnglishPolandSPOJ63791966581.10%50.00%25.00%SPOJ (Sphere Online Judge) is an online judge system with 2000 programming challenges. The solutions to challenges can...
15SlovakSlovakiaBrainQuest15685119013.75%50.00%63.89%Brainquest is a slovak riddle site, focused on crypto, steganography and logics. Also there is an category Orbis pictis...
36EnglishTurkeyRoseCode13555175.46%53.57%71.43%This site publishes mostly math based programming challenges. Other topics include Crypto, Brainfck, Hacking, and...
37EnglishUnited StatesCSTutoringCenter625934641.61%39.70%68.05%CSTutoringCenter.com provides many different kinds of challenges. You are free to solve them in any language and with...
5EnglishUnited KingdomTheBlackSheep1267034212.87%75.00%63.04%This site offers challenges in almost any category from easy to difficult. It has a nice user-interface, including an...
4EnglishSingaporeRankk844132712.84%79.35%75.00%Rankk's challenges are organised into levels from easy to difficult. The challenges are based on topics ranging from...
46FrenchFranceRoot-Me1759253219.68%60.00%70.83%Root Me allows everyone to test and improve their knowledge in computer security. Our community helps us maintain a...
13SpanishSpainYashira43473067.44%54.17%58.33%Yashira es un sitio en español dedicado a retos informáticos,ciencias e ingenio.
85EnglishCanadaRingZer0 Team Online CTF253402966.15%50.00%50.00%RingZer0 Team's online CTF offers you tons of challenges designed to test and improve your hacking skills through...
32EnglishUnited StatesHacker.org4632729220.87%86.77%83.82%The hacker explores the intersection of art and science in an insatiable quest to understand and shape the world around...
10FrenchFranceNewbieContest4689328713.57%75.00%79.69%A french site which is not only focused on beginners. Challenge categories are cracking, crypto, hacking, Java/script,...
95EnglishGermanyMysteryTwister50672620.42%50.00%50.00%MysteryTwister (MTC3) ===================== This time we are really happy to announce... that experts in the...
55FrenchFranceRight-Answer128424319.04%39.29%53.12%This website want to make you think and learn in several chall spread over several categories such as logic,...
91EnglishUnited KingdomHack The Box844132388.67%50.00%50.00%Hack The Box is an online platform allowing you to test your penetration testing skills and exchange ideas and...
22PolishPolandTDHack2329520213.88%45.00%42.50%TDHack (Think Devise Hack) is the first polish challenge site, launched in September 2004. The challenges cover a wide...
12EnglishSwitzerlandLOST-Chall347919913.80%63.04%66.31%A site based on the TV show Lost. Challenges range from easy to hard. Non-Lost fans will find this enjoyable too!
49EnglishUnited KingdomRevolution Elite288418814.45%75.00%83.33%A site based on a detective theme which uses suspect elimination, clues, and more traditional challenge categories to...
25PolishPolandShow Your Skills324418611.92%84.09%77.27%sys.warchall.net is a polish website with a lot of challenges. You can find here hackmes, crackmes, cryptography...
9GermanGermanyHappy-Security1825018325.70%63.33%66.07%Happy-Security is a german challenge site. {also translated in english} Beside the 'normal' challenge sections, there...
53EnglishUnited StatesEnigmaGroup4657118217.02%75.00%66.67%Since 2005, Enigma Group has been providing its members a legal and safe security resource where they can develop their...
70EnglishUnited StatesOverTheWire.org-117418.79%72.62%98.22%The wargames offered by the OverTheWire community can help you to learn and practice security concepts in the form of...
23GermanGermanyMiBs Challenges223015634.75%65.91%73.22%MiBs Challenges is a German riddle site started in 2005 with over 150 challenges in 9 categories including math,...
39EnglishSwitzerlandAstalavista28019915624.67%65.62%72.73%Astalavista.com - Home of the fiendish challenges
1EnglishGermanyWeChall418301453.05%80.77%79.69%WeChall is aiming to make a global ranking of challengers over multiple sites. It launched in january of 2008.
66GermanGermanyHacking-Challenges100114526.29%41.67%87.50%Hacking-Challenges is a german challenge site. In challenges from 8 categories, for example javascript, cryptography,...
18EnglishUnited StatesHackThisSite3950010218.83%63.23%67.65%Hack This Site is a free, safe and legal training ground for hackers to test and expand their hacking skills. More than...
40SpanishColombiaWorld of Wargame222910121.79%50.00%75.00%World of Wargame is a challenge site running from 2009 with more than a hundred challenges varying from easy to medium...
16EnglishNetherlands, TheNet-Force321599530.66%65.00%70.24%Net-Force has been around since 2002, starting off as a Dutch website. The site is now only in English and has a diverse...
48FrenchFranceW3Challs23198938.07%78.57%87.50%0% simulation & guessing. Hacking challenges only! Wargames (from classic linux/x86 to hardened kernel exploits),...
43FrenchFranceHackBBS312589118.08%75.00%60.00%Hack en situation réelle.
58EnglishUnited StatesValhalla40209112.47%50.00%100.00%Valhalla is a place for sharing knowledge and ideas. Valhalla allows users to submit code, as well as science,...
64EnglishUnited Stateswixxerd.com6809030.80%62.50%66.67%A collection of crackme's, hackme's, puzzles and games. Some are pretty simple, some... not so much...
21EnglishIsraelTryThis0ne125087217.14%45.00%50.00%Trythis0ne is a system of Hacking\Reversing\Encryption etc' challenges. Every challenge challenge the user in different...
83EnglishKorea, Republic Ofpwnable.kr27385705.29%75.00%100.00%'pwnable.kr' is a non-commercial [i]wargame site[/i] which provides various pwn challenges regarding system...
84EnglishColombiaChallengeland12837014.17%50.00%50.00%Challengeland is a site of war games to learn and improve your hacking skills created by Redexel and Germanlm93
38EnglishNetherlands, Thelistbrain.tk35476615.88%58.33%68.75%Another english site
51KoreanKorea, Republic OfWebhacking.kr311506640.88%70.00%83.33%Webhacking.kr has 58 challenge about webhacking. You can try various SQL INJECTION problem.
93EnglishIndonesiaCTFS.ME9110638.74%50.00%50.00%Ctfs.me is a place where you can learn about various category of hacking everytime and get you skill increased.
33EnglishUnited StatesBlack Zero15456122.95%78.12%72.22%Black Zero is a new community of hacking, coding, and lock picking enthusiasts. The site offers over 50 interactive...
20SpanishSpainelhacker.net26556565.95%72.22%66.67%We now have site navigation in english and spanish (some tests are only available in spanish). Esta es un wargame, que...
52FrenchFranceµContest10875628.55%77.27%77.08%FRENCH/ENGLISH : µContest is a programming challenges website. The challs can be about cryptgraphy, algorithmic,...
76EnglishUnited KingdomHackThis!!5779815531.46%50.00%87.50%Want to learn about hacking and network security? Find out how the most common hacks are performed.
30EnglishHungaryhax.tor.hu209065049.09%68.75%80.00%HaX.ToR.Hu is a challenge site putting emphasis on teaching basic security related issues in a fun way. Players get a...
59EnglishAntarcticahacking.allowed.org424913.27%87.50%100.00%Your description is invalid. It has to be 12-4096 characters long.
63EnglishSpainYoire5714937.10%25.00%33.33%Wargame oriented site for having fun and learn hacking :)
45EnglishPolandSecurity Traps14484827.40%100.00%100.00%The newest Polish professional challenge site. We focus on quality, difficulty and originality of the tasks, not...
35EnglishUnited Kingdomosix277524626.01%78.12%72.22%Home of the GEEK Challenges. We are a community of developers and IT enthusiasts interested in sharing ideas, writing...
6EnglishUnited KingdomElectrica115494425.04%88.46%79.55%Reverse engineering, cryptography, maths, steganography challenges. Home of the challengers handbook.
19EnglishUnited StatesThisisLegal.com268434341.91%48.08%70.83%Welcome to Thisislegal, a hacker wargames site but also with much more - such as forums and tutorials.
56KoreanKorea, Republic Ofwargame.kr71964221.29%75.00%75.00%this `wargame.kr` has challenges for web, system, reversing, etc.. i will trying to add more challenges, have a lotta...
How to add other sites to WeChall
If you are a challenge site administrator, please read join.php.
If you want your favorite site to get added you can try to contact their admins.
Please do not post about WeChall in their public forums, instead write them an email or pm.