Hello and welcome to: Extreme Skyblock!
Same as normal Skyblock: the objective is to survive!
But this time there are different challenges, different islands to go to, oh, and did I mention you're being surrounded by lava? Remember, this is a demo, more islands and challenges and such will be added if this gets hyped up enough. (Or I really want to do it :P)
Rules:
Play on Peaceful (This will change in full version)
Do not turn any lava into obsidian on purpose.
Do not kill yourself to replenish your food.
Challenges:
Build a cobblestone generator
Make a railway to each of the islands
Make a cactus farm
Make a nether wart farm
Make an infinite water source