Skyblock Cubed by MrYertey
Challenges:

Build a Cobblestone Generator
Build to all 25 islands.
Obtain netherrack.
Obtain a grass block.
Get a pink wool.
Enchant an item.
Obtain obsidian.
Craft an anvil.
Obtain 10 cacti.
Obtain 10 potatoes.
Obtain 10 carrots.
Obtain 10 beetroots.
Make a farm.
Build at least a 10 x 10 house with a roof, floor, crafting table, double chest, furnace, and bed in it.
Obtain three types of wood.
Make a tree farm.
Obtain iron.
Obtain diamond.
Obtain gold.
Obtain redstone.
Create a full set of iron armor.
Create a diamond hoe, pickaxe, sword, shovel, and an axe.
Obtain an enderpearl.
Go to a mini-dungeon.