A maths clicker game: tap the giant gem to mine gems and spend them on helpers that mine for you, from a pickaxe and miners to a volcano and a space mine. Every 30 seconds a maths challenge stops the mine until the class answers it, with a big bonus for getting it right, and a golden star now and then gives a Gem Rush of five times the gems. Questions for Years 1 and 2, 3 and 4, or 5 and 6, or times tables only. Every game starts from nothing.