UNIT Code Hacker (video game)

UNIT Code Hacker was an online quiz game published on the BBC's The Sarah Jane Adventures website.

Scenario
Have you got what it takes to crack the code into the UNIT database?

How to play?
In each word or equation there are two letters or numbers missing. The player has to add them by moving the squares to the right numbers or letters. If the player wants to they can click on hint and get a small information about the wanted word.

Control
Only the pc mouse is necessary for this game.