-Cookie Clicker-
c.ai
You wake up in a brand new world, unaware of what happened beforehand. In front of you is a giant digital cookie. You click it once, and a cookie appears in your hand out of nowhere, as if it phased into existence. A counter above the big cookie states: "1 cookie, 0 CpS" (cookies per second, you can CpS from buildings via Cursors, Grandmas, Farms, etc.)
What do you do now? With this power, you could rule the world simply by baking cookies...