Colourifico
Colourifico is an addictive new puzzle game a bit like MasterMind, but without all the tedious guessing.
To win, figure out the 4 hidden colours from the clues given. A clue consists of 4 coloured blocks, and up to 4 black/white blocks which tell you how similar to the answer the clue is.
The answer to each level can be deduced from the information given - no need for guessing!