Participating Challenge Sites

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ID Language Site Users Challs Average Dif Fun Description
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...
19EnglishUnited StatesThisisLegal.com268374341.90%48.08%70.83%Welcome to Thisislegal, a hacker wargames site but also with much more - such as forums and tutorials.
32EnglishUnited StatesHacker.org4631829220.87%86.77%83.82%The hacker explores the intersection of art and science in an insatiable quest to understand and shape the world around...
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...
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...
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...
58EnglishUnited StatesValhalla40189112.49%50.00%100.00%Valhalla is a place for sharing knowledge and ideas. Valhalla allows users to submit code, as well as science,...
82EnglishUnited Statesae27ff51524032.85%64.28%96.43%Beginner to intermediate puzzles intended to hone user hunting and decoding skills used in Alternate Reality Games.
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...
70EnglishUnited StatesOverTheWire.org-117418.80%72.62%98.22%The wargames offered by the OverTheWire community can help you to learn and practice security concepts in the form of...
80EnglishUnited StatesDisavowed.net213647.31%50.00%50.00%One of the original challenges! Disavowed.net is once again available to play (hosted within Mod-X). Enjoy!
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...
6EnglishUnited KingdomElectrica115464425.04%88.46%79.55%Reverse engineering, cryptography, maths, steganography challenges. Home of the challengers handbook.
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...
49EnglishUnited KingdomRevolution Elite286318814.44%75.00%83.33%A site based on a detective theme which uses suspect elimination, clues, and more traditional challenge categories to...
76EnglishUnited KingdomHackThis!!5772495531.45%50.00%87.50%Want to learn about hacking and network security? Find out how the most common hacks are performed.
78EnglishUnited KingdomMod-X6825940.96%62.50%62.50%Mod-X is a fictional online game. In Mod-X you will become one of the Mod-X 'agents' and have to solve any tasks that...
79EnglishUnited KingdomOmega Project264741.27%50.00%50.00%The Omega Project is a new set of Mod-X challenges which have been designed to test many different skill areas and to...
91EnglishUnited KingdomHack The Box834502368.78%50.00%50.00%Hack The Box is an online platform allowing you to test your penetration testing skills and exchange ideas and...
15SlovakSlovakiaBrainQuest15682119013.75%50.00%63.89%Brainquest is a slovak riddle site, focused on crypto, steganography and logics. Also there is an category Orbis pictis...
13SpanishSpainYashira43473067.44%54.17%58.33%Yashira es un sitio en español dedicado a retos informáticos,ciencias e ingenio.
17SpanishSpainHispabyte01348.19%45.45%61.36%Wargame de Hispabyte, zona práctica de un sitio dedicado a la seguridad, informática y programación. Wargame of...
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...
63EnglishSpainYoire5704937.10%25.00%33.33%Wargame oriented site for having fun and learn hacking :)
22PolishPolandTDHack2329420213.88%45.00%42.50%TDHack (Think Devise Hack) is the first polish challenge site, launched in September 2004. The challenges cover a wide...
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...
45EnglishPolandSecurity Traps14474827.40%100.00%100.00%The newest Polish professional challenge site. We focus on quality, difficulty and originality of the tasks, not...
47EnglishPolandSPOJ63688666451.10%50.00%25.00%SPOJ (Sphere Online Judge) is an online judge system with 2000 programming challenges. The solutions to challenges can...
90EnglishPolandhackburger8001031.20%100.00%25.00%(mainly) web security challenges by Laboratorium EE.
30EnglishHungaryhax.tor.hu209045049.08%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...
50HungarianHungaryGekkó1601027.84%62.50%56.25%Now available in English and Hungarian. You play the role of a police agent and help your boss, colleagues and friends...
74EnglishIrelandIRISSCON 2012 Lost Challenges4151359.57%50.00%87.50%This site includes the challenges I made for IRISSCON 2012 CTF. However due to the large number of submissions, these...
24EnglishItaly+Ma's Reversing286652820.97%87.50%85.00%A game I hope you and I will enjoy, a source of information which can become useful for reversers, and a way to meet new...
10FrenchFranceNewbieContest4686928713.56%75.00%79.69%A french site which is not only focused on beginners. Challenge categories are cracking, crypto, hacking, Java/script,...
43FrenchFranceHackBBS312589118.08%75.00%60.00%Hack en situation réelle.
46FrenchFranceRoot-Me1752173219.70%60.00%70.83%Root Me allows everyone to test and improve their knowledge in computer security. Our community helps us maintain a...
48FrenchFranceW3Challs23112938.07%78.57%87.50%0% simulation & guessing. Hacking challenges only! Wargames (from classic linux/x86 to hardened kernel exploits),...
52FrenchFranceµContest10875628.55%77.27%77.08%FRENCH/ENGLISH : µContest is a programming challenges website. The challs can be about cryptgraphy, algorithmic,...
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,...
72EnglishFranceNo Such Con 2013000.00%50.00%50.00%The HES/NSC 2013 challenges. Still available thanks to Steven from overthewire.org!
1EnglishGermanyWeChall417841453.05%80.77%79.69%WeChall is aiming to make a global ranking of challengers over multiple sites. It launched in january of 2008.
9GermanGermanyHappy-Security1808618325.70%63.33%66.07%Happy-Security is a german challenge site. {also translated in english} Beside the 'normal' challenge sections, there...
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,...
61EnglishGermanyRedTigers Hackit-11055.15%75.00%95.00%10 SQL Injection challenges. After the final level you can put yourself into the hall of fame. No registration possible.
66GermanGermanyHacking-Challenges100114526.29%41.67%87.50%Hacking-Challenges is a german challenge site. In challenges from 8 categories, for example javascript, cryptography,...
92EnglishGermanytry to decrypt4952337.41%50.00%100.00%Little game to train your brain - try to decrypt some texts in different levels from easy to hard. Can you enter the...
95EnglishGermanyMysteryTwister50672620.42%50.00%50.00%MysteryTwister (MTC3) ===================== This time we are really happy to announce... that experts in the...
85EnglishCanadaRingZer0 Team Online CTF252922966.15%50.00%50.00%RingZer0 Team's online CTF offers you tons of challenges designed to test and improve your hacking skills through...
73EnglishBelgiumTasteless-12145.34%100.00%100.00%Tasteless challenges, several levels that will test you in security and logical thinking
16EnglishNetherlands, TheNet-Force321599530.64%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...
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.