Enough of Skyblock and survival island try this
survival map

Challenges:
1: Make a cobblestone generator
2: Get the sand island safe
3: Make a tunnel to the bottom of the ocean
4: Go to the nether
5: Expand the island
6: Make a tree, wheat, melon and pumpkin farm
7: Make a shelter in the overworld and the nether
8: Make a mobspawner
9: Make an animal farm
10: Craft a bed
11: Make a goldnugget farm in the nether
12: Get leather armor
13: Make an golden apple
14: Get enough food to survive
15: Make a treehouse
16: Get some decoration
17: Make a second floor on your house
18: Get 3 stacks of sand
19: Get some TNT
20: Find a nether fortress

Rules:
1: Don't suicide for food and health bar
2: Don't cheat any items
3: If you spawn in water just go in creative or you will drown
4: Don't kill each other if you are in multiplayer
5: Feel free to survive