Participating Challenge Sites

ID Language Site Users Challs Average Dif Fun Description
47EnglishPolandSPOJ122179770021.12%62.50%18.75%SPOJ (Sphere Online Judge) is an online judge system with 2000 programming challenges. The solutions to challenges can...
97FrenchFranceÉnigmes À Thématiques208558342.34%50.00%50.00%Énigmes À Thématiques, c'est une nouvelle énigme inédite qui sort chaque jour dans des domaines aussi variés que...
104EnglishUnited Statespwn.college35096176211.09%41.67%91.67%pwn.college is an education platform for students (and other interested parties) to learn about, and practice, core...
91EnglishUnited KingdomHack The Box232458615813.03%87.50%100.00%Hack The Box is an online platform allowing you to test your penetration testing skills and exchange ideas and...
15SlovakSlovakiaBrainQuest17209130112.68%50.00%63.89%Brainquest is a slovak riddle site, focused on crypto, steganography and logics. Also there is an category Orbis pictis...
46FrenchFranceRoot-Me7753665995.17%66.67%78.12%Root Me allows everyone to test and improve their knowledge in computer security. Our community helps us maintain a...
85EnglishCanadaRingZer0 Team Online CTF514023965.60%100.00%100.00%RingZer0 Team's online CTF offers you tons of challenges designed to test and improve your hacking skills through...
105EnglishSpainHackMyVM168433773.85%50.00%50.00%This site was created around 2020 to provide to people a free platform to play CTF, Challenges, some online labs and to...
95EnglishGermanyMysteryTwister130543720.49%50.00%50.00%MysteryTwister (MTC3) ===================== This time we are really happy to announce... that experts in the...
4EnglishSingaporeRankk999735311.91%80.77%75.89%Rankk's challenges are organised into levels from easy to difficult. The challenges are based on topics ranging from...
5EnglishUnited KingdomTheBlackSheep1292734213.13%75.00%63.04%This site offers challenges in almost any category from easy to difficult. It has a nice user-interface, including an...
10FrenchFranceNewbieContest5493431013.04%75.00%80.88%A french site which is not only focused on beginners. Challenge categories are cracking, crypto, hacking, Java/script,...
32EnglishUnited StatesHacker.org4977229221.31%86.77%84.72%The hacker explores the intersection of art and science in an insatiable quest to understand and shape the world around...
101FrenchFrancePyDéfis433428536.82%50.00%100.00%PyDéfis offers you small programming challenges (algorithms, computer science, graph theory, recursion, ...) in the...
99EnglishUnited KingdomCryptoHack936392339.76%100.00%100.00%CryptoHack is a fun platform to learn modern cryptography through solving challenges and cracking insecure code. Can you...
22PolishPolandTDHack2328820213.93%45.00%42.50%TDHack (Think Devise Hack) is the first polish challenge site, launched in September 2004. The challenges cover a wide...
49EnglishUnited KingdomRevolution Elite376819813.78%75.00%83.33%A site based on a detective theme which uses suspect elimination, clues, and more traditional challenge categories to...
1EnglishGermanyWeChall690971882.41%80.77%79.69%WeChall is aiming to make a global ranking of challengers over multiple sites. It launched in january of 2008.
70EnglishUnited StatesOverTheWire.org-117116.64%65.97%97.55%The wargames offered by the OverTheWire community can help you to learn and practice security concepts in the form of...
66GermanGermanyHacking-Challenges134614528.01%41.67%90.00%Hacking-Challenges is a german challenge site. In challenges from 8 categories, for example javascript, cryptography,...
106GermanGermanyHack The Web5317511169.10%50.00%50.00%On Hack The Web, you'll find a playful introduction to the world of hacking. In a variety of challenges, you can put...
18EnglishUnited StatesHackThisSite3950010223.54%58.82%70.59%Hack This Site is a free, safe and legal training ground for hackers to test and expand their hacking skills. More than...
40SpanishColombiaWorld of Wargame271210120.36%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...
48EnglishFranceW3Challs34535986.99%78.57%87.50%0% simulation & guessing. Hacking challenges only! Wargames (from classic linux/x86 to hardened kernel exploits),...
16EnglishNetherlands, TheNet-Force392679530.75%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...
43FrenchFranceHackBBS312589118.32%75.00%60.00%Hack en situation réelle.
51KoreanKorea, Republic OfWebhacking.kr700538020.33%70.00%83.33%Webhacking.kr has 80 challenges about webhacking. You can try various SQL INJECTION problem.
21EnglishIsraelTryThis0ne134437216.75%45.00%50.00%Trythis0ne is a system of Hacking\Reversing\Encryption etc' challenges. Every challenge challenge the user in different...
98EnglishAustralia247CTF223477210.74%87.50%100.00%247CTF is a security environment where hackers can test their abilities across a number of different challenge...
83EnglishKorea, Republic Ofpwnable.kr69060705.95%87.50%100.00%'pwnable.kr' is a non-commercial [i]wargame site[/i] which provides various pwn challenges regarding system...
76EnglishUnited KingdomDefend the Web8453786027.08%56.25%91.67%An interactive security platform where you can learn and challenge your skills.
102EnglishBrazilPromptRiddle31605925.98%68.75%75.00%PromptRiddle is a fun prompt-based riddle website which requires thinking outside the box along with...
20SpanishSpainelhacker.net28404565.86%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...
96EnglishKorea, Republic OfLordofSQLi175764939.84%75.00%100.00%LoS provides 49 stepwise SQLinjection challenges. Challenges are about SQLinjection at mysql, sqlite, mssql, mongodb,...
89EnglishTaiwanpwnable.tw350714618.20%100.00%100.00%Pwnable.tw is a wargame site for hackers to test and expand their binary exploiting skills.
6EnglishUnited KingdomElectrica125884424.61%89.28%82.69%Reverse engineering, cryptography, maths, steganography challenges. Home of the challengers handbook.
82EnglishUnited Statesae27ff212084139.52%65.62%96.88%Beginner to intermediate puzzles intended to hone user hunting and decoding skills used in Alternate Reality Games.
62KoreanKorea, Republic OfSuNiNaTaS164753249.07%37.50%100.00%SuNiNaTaS have 15 games : Web(8), Cracking(4), Forensic(3) Skill level is medium. We are good hackers.
24EnglishItaly+Ma's Reversing296832820.52%88.46%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...
103EnglishTunisiaPWN.TN19202818.00%50.00%50.00%PWN.TN is an educational and non commercial wargame. There is various IT security related challenges for fun and...
60EnglishKorea, Republic OfReversing.Kr351942753.33%50.00%50.00%This site tests your ability to Cracking & RCE (Reverse Code Engineering).
92EnglishGermanytry to decrypt13562341.69%87.50%100.00%Little game to train your brain - try to decrypt some texts in different levels from easy to hard. Can you enter the...
50EnglishHungaryGekkó12771041.01%62.50%56.25%You play the role of a special agent and help your boss, colleagues and friends to tackle down problems in various areas...
61EnglishGermanyRedTigers Hackit-11048.33%75.00%95.00%10 SQL Injection challenges. After the final level you can put yourself into the hall of fame. No registration possible.
78EnglishUnited KingdomMod-X6847941.06%66.67%75.00%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 Project267745.08%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...
80EnglishUnited StatesDisavowed.net220646.47%50.00%50.00%One of the original challenges! Disavowed.net is once again available to play (hosted within Mod-X). Enjoy!
72EnglishFranceNo Such Con 2013000.00%50.00%50.00%The HES/NSC 2013 challenges. Still available thanks to Steven from overthewire.org!
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.