There is quite a lot to experience within this world, but for starters there are 3 main worlds we have so far.

A huge RPG world where you are a lonely fisherman trying to earn some Fyshalds, go fishing (or mining) there is a ton of lore to uncover from fallen empires in the past. Learn more about the world, Become the richest in the lands, all in of FYSH!

An Economy Survival world with lots of cool stuff such as the auction house, quests and RPG skills to level up, you are teleported to a random location in a 50k by 50k world and from there you can either teleport to players to join or fight them.

A deadly Anarchy server that has been around for over a year now, try to escape spawn, build a base far away, and survive... more info on its own page.

You earn money by selling items you find as you play normal survival using /sellgui, you can build farms with materials from /shop or from yourself, and also there is the auction house where you can buy items from other players using /ah, or add your own items to make money yourself using /ah auction

You can only earn Gems within the lobby, no other world supports it, (See Diamond Tier Exception). To physically earn a Gem you must stay still and not move for 1 whole minute, great when AFK. Gems are only used to buy spawners and nothing else as of publishing this.