The World Education Games 2013 will be held on 5th to 7th March 2013 with World Maths Day 0n 6th March 2013. The World Maths Day blog has the latest news you can also follow @WorldEduGames on Twitter or The World Education Games on Facebook.
Registration for the 2013 event is now open and you can play the games now.
(Teachers see World Maths Day on Mathematics, Learning and Web 2.0).
If you enjoy games of this kind Sumdog and Tutpup are free all year round. For other free Number games see this page also this page on games collections; the collections from Math Playground and that from Oswego City School District are particularly good for mental arithmetic. For practise at tables, including against the clock see this collection.