How can you earn gold ?
i know you can play games to earn gold but what else????

You can post. :3
The longer your post is (can't be just random words), the more gold you can get. So a full post can get you the max 20gold. ;D
You can also draw and sell art, or exchange items. :3

And you can earn loads from games, up to 500g! xD

Post, post, post!
That's the key to earning gold.
But hey, getting 500 gold a day from games isn't bad either.