This is a standalone game played in normal survival (or hardcore) minecraft for java. You will need to start a new game and add this datapack before you start.
The game is altered to put you on an island. Your goal is to kill The Ender dragon (as normal) but first you need to appease the gods in order to go about your business.
There are 4 gods to make good with. They each want different things. Until you give them what they want, you are cursed.
You may not touch water until you have made amends with Poseidon. Doing so teleports you back to the island.
You may not travel more than 300 blocks in any direction until you have made amends with Hera. (unless you are deep under the earth.. height 26) Doing so teleports you back to the island.
You may not grow crops or plant saplings until you have made amends with Gaia. Though sugar cane, vines, mushrooms and bamboo are all okay.
You may not travel to the nether till you have made amends with Hades.