Hello, i'm Zixem and i developed few SQLi challenges.
More about SQL Injection.


[SQLi challenges]

Level 1 (Super Easy)
Level 2 (Easy)
Level 3 (Medium)
Level 4 (Normal)
Level 7 (Medium)
Level 8 (Hard)
Level 9 (Medium)
Level 10 (Pro)

[BF challenges]
Level 5 (Hard)
To know how to crack level 5, you must know scripting.

[SQLi-Blind challenges]
Level 6 (Experienced)
Using information_schema\tools in blind challenges is illegal!