The metaverse is essentially a high score list.
There is a formula for determining your score which is:
(Sum of depreciated games)/(number of games)^0.4
Game scores depreciate at 5% a month down to a lower limit of 65% of their original value. These depreciated scores are summed and divided by the number of games played taken to the 0.4 power. Note that the 0.5 power is the square root.
To make this division more intuitive if the sum of depreciated games were simply divided by the number of games then that's the same as your average score. If the sum of depreciated games weren't divided by anything then that would be your total accumulated score. Dividing the sum of depreciated games by the number of games to the 0.4 power is basically a compromise between these two extremes.
Also to submit a game to the metaverse you have to start the game as a metaverse game using the "metaverse" button instead of the "new game" button.
There is also the Alternate Metaverse (AltMeta) which uses the regular metaverse as a front end submission mechanism but basically creates your total score from the sum of depreciated scores without dividing by some function of the number of games submitted. However the AltMeta depreciates games by 16 and 2/3 percent per month and so once a game is six months old it depreciates to zero. The AltMeta also has different "classes" for people that play different sized games.
There are some pinned posts in the Metaverse forum where some of these things are discussed.
For "regular" metaverse scoring see the
Answers to questions about the Metaverse thread.
For questions about the AltMeta see the
Alternative Metaverse & Statistics thread or the
AltMeta Help Desk thread.
For the AltMeta itself see
http://altmeta.kryofx.com/.
Finally I did write up a lot of detailed explanations for the Altmeta about a year ago. There are links to the explanations in the OP of the
AltMeta Class Beta thread. All of the links to the descriptions are still good and I think they're still fairly helpful although the links to the pictures in the explanation for the Data Charts have since been broken.