Khet and Quarto, are games of what type?
Quarto (board game) Quarto is a board game for two players invented by Swiss mathematician Blaise Müller in 1991. It is published and copyrighted by Gigamic.
Patball Patball is a non-contact competitive ball game played in many forms using one's hands or head to hit the ball against a wall – the objective being to get the succeeding player out. The game is popular in school playgrounds during break-time. Patball is played with a tennis ball, or other similar-sized specific patball, and the preferred hand, rather than any form of racquet or bat. The hand is used to "pat" the ball at the wall with the objective of making the ball un-returnable, similar to squash. In some variations of the game the use of the foot is also allowed.