Quick Answer
A good seed is not only a pretty spawn. For a long survival world, useful structures and resources should be reasonably reachable: villages, Nether access, strongholds, ancient cities, trial chambers, wood types, and rare biomes are all worth recording.
Recording Template
| Type | Record This | Why It Matters |
|---|---|---|
| Spawn | Coordinates, food, wood type | Opening route |
| Village | Coordinates, job blocks, smith houses | Villager economy |
| Terrain | Mountains, ocean, desert, swamp | Base and resources |
| Structures | Stronghold, ancient city, trial chamber | Midgame and endgame goals |
| Nether | Bastion, fortress, dangerous terrain | Blaze rods and materials |
Exploration Method
Start by mapping resources within about 1000 blocks of spawn, then expand through main roads, Nether coordinates, and End routing. Bring bed, boat, food, blocks, and spare tools on long trips so exploration does not become a one-way journey.