Gems, pigs, bananas, spices, ivory, rice, sugar, spices, dyes... all green...
... resources found in the jungle are among the best in the game.
Which is more, on certain templates, they spawn in very high density.
There are a few things one can do to take advantage of what can be an overwhelming amount of luxury :
- get Alphabet quick (one way or another) to trade for Iron Working ;
- self-research Iron Working early if there are enough Gems nearby to justify it ;
- get extra workers, compared with non-jungle maps ;
- farm the first few tiles to allow cities to grow ;
- whip infrastructure in cities, so they don't need to work jungle tiles ;
- overlap cities more than usual, so improved tiles can be worked at all times.
Consider this :
Given enough health (fresh water, trade route), a city doesn't necessarily need more than 3 improved tiles to set up Granary, Library and Forge. Size 4 is also a good size to whip workers.
Whipping an item from size 4 to 2 frees up a tile for another city to work with, growing from 3 to 4 and then whipping.
With enough workers out, cities can gradually grow to higher sizes.