Kenken is a logic puzzle game similar to Sudoku, but players are given + - x or ÷ questions to solve the area and complete the grid. This site has a range puzzles at various complexities and difficulty levels.
http://ictmagic.wikispaces.com/Maths
This is a wonderfully entertaining maths game where players adjust the force and angle to throw bananas at the opponent gorilla to score points.
http://ictmagic.wikispaces.com/Maths
This is a virtual maths board game where you have to keep track on how much money you have to deposit at the end of the month.
http://ictmagic.wikispaces.com/Maths
This site has a great set of maths games that are sorted into different primary age groups. Practise multiplication, more/less than, decimals and much more. No sign in or registration needed.
http://ictmagic.wikispaces.com/Maths
A great downloadable programme for making computer games for a variety of platforms and devices. Drag and drop items to make your creations. It's provides a more mature environment than tools like Scratch and there are many more options and advance settings for talented students.
http://ictmagic.wikispaces.com/ICT+%26+Web+Tools
Civilization is a popular series of strategy games where players must build empires, trade and wage war. It is also a personal favourite of mine. This is a fab free downloadable version which could be useful in many areas of the curriculum, including money and area in maths and learning about cultures from the past.
http://ictmagic.wikispaces.com/History
A wonderful site for teaching about money. Users go on adventures and earn coins. Travel back in time, play games and have fun... but only if you have the cash!
http://ictmagic.wikispaces.com/Maths
A great history game about 1066. Lead your army into bloody battles. It's gory and your students may even learn something.
http://ictmagic.wikispaces.com/History
After teaching about pirates, talk about modern day pirates with this lesson plan for ages 7-9 with this educational game and lesson plan. This will prepare kids to be safe online over the summer.