Learning Games A great section on games that have an educational side to them.
Youth Group Games A site full of absolutely tonnes and tonnes of games for young people. A nice and well designed site.
Puzzlemaker lets you create your own puzzles and print them off for free. You can make word jumbles, word searches, crosswords and all kinds of other stuff. These curriculum resources are really good if you need youth ideas, like what to do on long coach journeys or how to introduce topics in a creative way.