Mystical mathematics, exploration of the simplest geometrical shapes possible and the eventual breakthrough from polychrome to monochrome. Speed by Kurage is clearly a suprematist gameplay experiment. If you are able to memorize and distinguish circular shapes and count one-digit-numbers, you should be able to fully experience the gameplay.
The gameplay is in fact stripped down to the very basics – find the right number and click it. And do it quick. As is the name – basically any computer game where appropriate reaction within a certain time frame is necessary could be called “Speed”. But underneath the obvious “Speed”, there is a sort of meditative calmness. Nothing happens if you ignore the clock. If you feel like it, you can click the numbers whenever you want. Make them disappear when you feel ready for it. A game called “Speed”, where the fundamental principle of all games that require speed is juxtaposed.