Wargames sites offer hacking challenges on different categories like cryptographic, cracking, steganography, programming, Linux and Windows knowledge, logic, math and science. The difficulty of the challenges vary as well.
As any other gaming platform the more challenges you solve the more points you get and obviously there is a ranking where you can compete to be on top.
Wargames are used for beginners, skilled and experts for learning, practicing and improving their skills on different topics.
Here they are my top 10 of wargames sites
1. WeChall
Categories: Programing, logic, Linux/Windows, steganography, crypto, exploits, cracking and more
2. root-me
Language: English, Spanish, French, German
Categories: Programing, Logic, Linux/Windows, Steganography, Cryptographic and more
3. pwnable.kr
Language: English
Categories: Programming, reversing, bug exploitation, cryptography and more.
4. HackerGateway
Language: English
Categories: Steganography, cryptography, Web
5. Reversing.kr
Language: English
Categories: Cracking and reversing
6. Hack the Box
Language: English
Categories: Bug exploitation, pentesting and more
7. Codingame
Language: English
Categories: Programing, Logic
8. Over the wire
Language: English
Categories: Linux, Programming
9. CryptoHack
Language: English
Categories: Cryptographic
10. Lord of the SQLI
Language: English
Categories: SQL injection
Bonus:
Not in english but good ones
Categories: Programing, Logic, Linux/Windows, Steganography, Cryptographic and more
Language: French
Best aspect of Wargames is that you will always find a new challenge and nobody solves a challenge on the same way. So keep your mind moving and lets play! ;)