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| Language | Site | Score | Users | Challs | Average | Dif | Fun | Description |
 | English | ![[LOGO]](/dbimg/logo/5?0 "The TheBlackSheep Logo") TheBlackSheep | 24838 | 13650 | 341 | 14.78% | 73.86% | 66.67% | This site offers challenges in almost any category from easy to difficult. It has a nice user-interface, including an... |
 | español | ![[LOGO]](/dbimg/logo/13?0 "The Yashira Logo") Yashira | 24181 | 2988 | 270 | 9.60% | 60.00% | 57.14% | Yashira es un sitio en español dedicado a retos informáticos,ciencias e ingenio. |
 | English | ![[LOGO]](/dbimg/logo/4?0 "The Rankk Logo") Rankk | 23502 | 2548 | 269 | 14.80% | 72.37% | 68.18% | Rankk's challenges are organised into levels from easy to difficult. The challenges are based on topics ranging from... |
 | English | ![[LOGO]](/dbimg/logo/32?0 "The Hacker.org Logo") Hacker.org | 22669 | 16905 | 276 | 22.34% | 82.50% | 77.78% | The hacker explores the intersection of art and science in an insatiable quest to understand and shape the world around... |
 | Française | ![[LOGO]](/dbimg/logo/14?0 "The infomirmo Logo") infomirmo | 22605 | 668 | 190 | 10.05% | 67.86% | 64.28% | A new French site turned to the learning of the computing through the SOSI challenge. SOSI is a linear challenge with a... |
| Française | ![[LOGO]](/dbimg/logo/10?0 "The NewbieContest Logo") NewbieContest | 22482 | 21817 | 234 | 17.81% | 71.88% | 75.00% | A french site which is not only focused on beginners. Challenge categories are cracking, crypto, hacking, Java/script,... |
 | English | ![[LOGO]](/dbimg/logo/12?0 "The LOST-Chall Logo") LOST-Chall | 22302 | 1234 | 201 | 14.30% | 61.91% | 67.86% | A site based on the TV show Lost. Challenges range from easy to hard. Non-Lost fans will find this enjoyable too! |
 | język polski | ![[LOGO]](/dbimg/logo/22?0 "The TDHack Logo") TDHack | 22214 | 18739 | 200 | 14.89% | 50.00% | 47.22% | TDHack (Think Devise Hack) is the first polish challenge site, launched in September 2004. The challenges cover a wide... |
| język polski | ![[LOGO]](/dbimg/logo/25?0 "The PHMaster Logo") PHMaster | 22035 | 2223 | 185 | 14.05% | 82.50% | 75.00% | phmaster.info is polish website with a lot of tasks. You can find there hackmes, crackmes, cryptography challenges,... |
| English | ![[LOGO]](/dbimg/logo/11?0 "The DareYourMind Logo") DareYourMind | 21742 | 7630 | 187 | 16.84% | 69.23% | 56.67% | More than 180 challs. Javascript, Cracking, Crypto, Stegano, Realistic challs (SQL, Authentication, ...), Logic,... |
 | slovenčina | ![[LOGO]](/dbimg/logo/15?0 "The BrainQuest Logo") BrainQuest | 21465 | 6341 | 291 | 33.74% | 60.71% | 67.86% | Brainquest is a slovak riddle site, focused on crypto, steganography and logics. Also there is an category Orbis pictis... |
 | English | ![[LOGO]](/dbimg/logo/42?0 "The Tools & Design Logo") Tools & Design | 20959 | 2112 | 83 | 6.47% | 50.00% | 50.00% | THC is a challenge and tournament site for newbies and more advanced hackers, the site itself is fully integrated as a... |
| English | ![[LOGO]](/dbimg/logo/1?0 "The WeChall Logo") WeChall | 20514 | 2768 | 49 | 4.44% | 77.78% | 68.05% | WeChall is aiming to make a global ranking of challengers over multiple sites.
It launched in january of 2008. |
| español | ![[LOGO]](/dbimg/logo/20?0 "The elhacker.net Logo") elhacker.net | 20380 | 10148 | 56 | 7.00% | 78.57% | 71.43% | We now have site navigation in english and spanish (some tests are only available in spanish). Esta es un wargame, que... |
 | Deutsch | ![[LOGO]](/dbimg/logo/9?0 "The Happy-Security Logo") Happy-Security | 20212 | 6713 | 167 | 26.80% | 63.46% | 68.75% | Happy-Security is a german challenge site. {also translated in english}
Beside the 'normal' challenge sections, there... |
| Française | ![[LOGO]](/dbimg/logo/43?0 "The HackBBS Logo") HackBBS | 19947 | 21388 | 84 | 15.99% | 75.00% | 87.50% | Hack en situation réelle. |
| English | ![[LOGO]](/dbimg/logo/37?0 "The CSTutoringCenter Logo") CSTutoringCenter | 19812 | 886 | 282 | 45.46% | 62.50% | 79.17% | CSTutoringCenter.com provides many different kinds of challenges. You are
free to solve them in any language and with... |
| English | ![[LOGO]](/dbimg/logo/39?0 "The Astalavista Logo") Astalavista | 19736 | 174300 | 149 | 28.23% | 62.50% | 78.12% | Astalavista.com - Home of the fiendish challenges |
| English | ![[LOGO]](/dbimg/logo/2?0 "The HackQuest Logo") HackQuest | 19654 | 9425 | 98 | 21.00% | 71.67% | 76.56% | Hackquest offers challenges from all kind of computer-sections The site keeps track of a users spent time on a... |
 | English | ![[LOGO]](/dbimg/logo/21?0 "The TryThis0ne Logo") TryThis0ne | 19321 | 7028 | 71 | 19.60% | 43.75% | 45.83% | Trythis0ne is a system of Hacking\Reversing\Encryption etc' challenges.
Every challenge challenge the user in different... |
 | English | ![[LOGO]](/dbimg/logo/36?0 "The Rosecode Logo") Rosecode | 19177 | 390 | 73 | 21.28% | 66.67% | 71.43% | This site regularly publishes math based programming challenges. You may use any programming language you like. You can... |
| English | ![[LOGO]](/dbimg/logo/38?0 "The listbrain.tk Logo") listbrain.tk | 19137 | 171 | 66 | 20.48% | 50.00% | 68.75% | Another english site |
| English | ![[LOGO]](/dbimg/logo/18?0 "The HackThisSite Logo") HackThisSite | 19047 | 39500 | 74 | 22.66% | 68.33% | 75.00% | Hack This Site is a free, safe and legal training ground for hackers to test and expand their hacking skills. More than... |
| Deutsch | ![[LOGO]](/dbimg/logo/23?0 "The MiBs Challenges Logo") MiBs Challenges | 18832 | 1475 | 153 | 36.67% | 68.75% | 83.33% | MiBs Challenges is a german riddle site with over 150 challenges in 9 categories including math, cryptography, science... |
| English | ![[LOGO]](/dbimg/logo/33?0 "The Black Zero Logo") Black Zero | 18825 | 1545 | 61 | 22.57% | 78.12% | 81.25% | Black Zero is a new community of hacking, coding, and lock picking enthusiasts. The site offers over 50 interactive... |
| English | ![[LOGO]](/dbimg/logo/16?0 "The Net-Force Logo") Net-Force | 18516 | 18027 | 93 | 30.59% | 62.50% | 68.33% | Net-Force has been around since 2002, starting off as a Dutch website. The site is now only in English and has a diverse... |
 | English | ![[LOGO]](/dbimg/logo/24?0 "The +Ma's Reversing Logo") +Ma's Reversing | 18383 | 23948 | 28 | 21.18% | 84.09% | 80.00% | 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... |
| English | ![[LOGO]](/dbimg/logo/6?0 "The Electrica Logo") Electrica | 18350 | 9387 | 44 | 24.23% | 81.95% | 73.44% | Reverse engineering, cryptography, maths, steganography challenges. Home of the challengers handbook. |
| English | ![[LOGO]](/dbimg/logo/35?0 "The osix Logo") osix | 18235 | 22858 | 46 | 25.67% | 78.57% | 82.14% | Home of the GEEK Challenges. We are a community of developers and IT enthusiasts interested in sharing ideas, writing... |
| English | ![[LOGO]](/dbimg/logo/19?0 "The ThisIsLegal Logo") ThisIsLegal | 16384 | 2453 | 41 | 42.62% | 56.25% | 75.00% | A new hacker wargame site with over 30 challenges and lots more, including a forum, videos, tutorials/articles and... |
| English | ![[LOGO]](/dbimg/logo/26?0 "The thebackupbox Logo") thebackupbox | 16028 | 695 | 18 | 42.55% | 79.55% | 76.92% | Shell challenges. |
 | English | ![[LOGO]](/dbimg/logo/30?0 "The hax.tor.hu Logo") hax.tor.hu | 15621 | 8756 | 50 | 51.23% | 65.62% | 77.78% | HaX.ToR.Hu is a challenge site putting emphasis on teaching basic security related issues in a fun way.
Players get a... |
| español | ![[LOGO]](/dbimg/logo/17?0 "The Hispabyte Logo") Hispabyte | 4011 | 0 | 13 | 47.48% | 36.11% | 52.78% | Wargame de Hispabyte, zona práctica de un sitio dedicado a la seguridad, informática y programación.
Wargame of... |