/atlantis Dramatically raises the world’s water level, submerging all but the highest mountains.
/summon Instantly drops a desired creature or object into your world, especially handy for when you’re short a couple of tame ocelots.
/gamerule doDaylightCycle false This will stop the game’s day/light cycle in it’s place, allowing you to live under permanent sunshine or moonlight. To resume the day/light cycle type in “/gamerule doDaylightCycle true”.
/gamerule keepInventory true Ensures you don’t lose your items upon dying. To revert this, type “false” in place of “true”
/seed This will produce a code for your world, note it down so that you can load up an identical one in the future.
/difficulty peaceful Changes difficulty to Peaceful mode. Replace “peaceful” with “easy”, “ normal”, or “hard” for more of a challenge.
/time set 1000 Sets the time to day. Replace “1000” with “0” for dawn, “6000” for midday, “12000” for dusk and “18000” for night.
/gamemode survival Changes the gamemode to Survival mode, which means mobs will attack you and you’ll have to gather all resources the old-fashioned way.
/gamemode creative Changes the gamemode to Creative mode, which allows player flight, unlimited resources and stops mobs attacking you.
/weather WeatherType Allows you to choose the weather or your world. Options include: rain, thunder and snow.