What is the purpose of the Meta Game?

Basically, most mechanical meta-games revolve around some sort of progression or economy that wrap around the core gameplay without directly utilizing it. These systems are usually created with the purpose of providing additional mid and long-term goals to the players, to keep them engaged with the core gameplay for longer.

How can you earn with the Meta Game?

The economy system where buying things in the city will make you money over-time is also essentially a meta-game. Basically, most mechanical meta-games revolve around some sort of progression or economy that wrap around the core gameplay without directly utilizing it.

What are some examples of a metagame?

In particular, metagaming often refers to having an in-game character act on knowledge that the player has access to but the character should not. For example, tricking Medusa to stare at a mirror when the character has never heard of Medusa and would not be aware of her petrifying stare.