DragonBox Algebra's approach to dragging "tiles" to explain algebraic concepts in a computer game for 5-12 years old might be one basis for such a game. It's when we can do this without words or gestures that new fun will emerge. I tried Brainfingers, a brain wave headset, in Greece in 2007 (Andrew Junkers is the inventor), and with 3 sensors on the forehead, and without language or gestures, I and any end user could pick letters from a keyboard on a computer screen to spell words (e.g. "HELLO WORLD"), but the end user needed to be able to relax fully to use the device (e.g. Andrew Junker tried it with physicist Stephen Hawking at Cambridge, who has ALS, and who uses other technologies to communicate, but Hawking was too agitated with his disease to be able to successfully use Brainfingers). It would be great to wiki-add "a label when we know a person is from a given country and when it does not have a label in the language of the land," in a brain wave headset manner (e.g. Brainfingers - and there are many such devices) - and as a kind of game eventually.