Somewhere at the top of a hill in China, under a tree in Mali, in the middle of a field in Russia... In 2021, 2077, 2091, etc.
This is not a virtual game but the reality of bodily movement in space and time. You will temporarily put aside your daily life to travel to a precise point on the planet on a specific day. You will meet other people from different places who, like you, have followed the same instructions. Thirty appointments in total, about three per decade, covering the century until 2099. When you cannot follow the program any longer because you're old, ill, or for any other reason, others will take over, and later on they will set up other appointments in other places. And so on...