This Terraria 1.4.5 SkyBlock Walkthrough Guide is shortly after the update, so some systems may still evolve as people push the seed further. Everything here is based on personal testing, scattered forum discoveries, wiki cross-checking, and a lot of trial and error. SkyBlock in Terraria is not about rushing bosses. It’s about learning how the game bends when resources are limited, and systems are forced to overlap in strange ways.
All mechanics described below assume the SkyBlock preset seed introduced in update 1.4.5.
Terraria 1.4.5 SkyBlock Walkthrough Guide
With update 1.4.5, Re-Logic added preset seeds directly into world creation. SkyBlock is now a selectable mode rather than something you have to manually type or set up.
When creating your world, click the seed selector, choose SkyBlock, and proceed normally. World size matters more here than in normal Terraria. A small world is strongly recommended because it keeps biome distances manageable and makes later automation far less painful. Difficulty is up to you. Expert works well if you’re comfortable with pressure early on, but nothing here requires it.
Once the world generates, you’ll spawn on a single floating island with almost nothing to your name.
Island
At the very beginning, you have only a few constants. The Guide is present, slimes will spawn endlessly, and your survival depends on learning what those slimes can give you. Slimes are not just enemies here. They are your economy.
Your first real goal is collecting around 50 gel to craft an actual weapon. The Slime Whip is usually the safer choice early because it gives reach and control, which matters when falling means death. The Slime Lance is fine too, but it’s riskier while you’re still learning movement on a tiny island.
Slimes will start dropping ropes, dirt, seeds, acorns, wood, potions, and small amounts of ore. This is where SkyBlock starts to feel strange, because progression doesn’t come from exploring outward but from letting the game feed itself back into you.
Plant grass seeds as soon as possible to create a basic Forest biome. Once grass spreads, plant acorns immediately. Trees are your lifeline, not just for wood but for tools and early crafting stations. Build a hammer early. You will need it sooner than you think.
Build First Farming Dungeon
Once you’ve stockpiled enough gel to craft around 150 building blocks, it’s time to descend. Below your island are multiple vertical layers, and each one can be exploited with the same basic concept.
The idea is simple. You build a room where enemies can spawn, a pit where they fall, and a platform that extends just far enough off-screen to keep spawn rates active. You don’t want enemies reaching you directly, but you still need to hit them.
This is where hoiks come into play. By hammering blocks into the correct shape, you can create a hoik that lets you attack through solid tiles while remaining untouched. Just remember to place a solid block at foot level behind the hoik so you don’t accidentally slide through it mid-fight.
You’ll repeat this setup on every layer: Surface, Dungeon layer, Caverns, and eventually the Underworld. Each one feeds different drops into your progression loop.
Loot Progression
Surface Layer
Slugs are your main income here. They drop acorns, wood, gel, ore, seeds, and rope at all times of day. Zombies appear at night and can drop torches and the Sickle, which is extremely important early. Demonic Eyes drop lenses, which you’ll want to save.
Dungeon Layer
Slugs continue to carry progression here, dropping stone, dirt, ore, potions, and torches. This layer exists mostly to bulk up resources and stabilize crafting.
Cavern Layer
This is where progression spikes. Slugs can now drop life crystals, spider webs, conveyor belts, marble bricks, boundary bricks, and more potions. Skeletons can drop miner armor, bone weapons, and tools. Mimics appear later and provide golden chest loot. Salamanders and giant shelled enemies drop accessories like the Depth Meter, Compass, and Rally yoyo.
Marble Caverns
Hoplites spawn here, and they are worth farming extensively. They drop Gladiator Armor, the Gladius, throwing spears, and the Stress Ball accessory. This accessory becomes extremely valuable later for AFK setups.
Granite Caverns
Granite Golems and Elementals drop granite bricks, geodes, and the Night Vision Helmet. This biome is less critical early but useful for niche crafting.
Underworld
Demons and Voodoo Demons drop the Demon Scythe and Voodoo Doll. Fire Imps drop the Obsidian Rose. Lava Slugs provide renewable lava. Hell Bats can drop the Magiluminescence replacement Mouse Bat.
NPC Progression and Stabilization
As soon as you get the Sickle from zombies, harvest hay from grass. Hay is one of the easiest housing materials in SkyBlock. Move in the Merchant as soon as possible.
The Merchant sells the Anvil, Piggy Bank, Miner’s Helmet, and other essentials that completely change early-game flow. More importantly, NPCs reduce enemy spawn rates on your main island, making it safer to manage builds and storage.
In the Caverns, you’ll eventually encounter the Skeleton Merchant. Buy rollers from him whenever possible. Rollers massively speed up horizontal building and later become core components of automation.
Liquids, Duplication, and Automation
Once you can craft a Furnace and purchase an Anvil, your next immediate craft should be a Bucket. Rain fills it with water over time, which lets you duplicate water infinitely using standard Terraria mechanics.
Lava works the same way. Farm Lava Slimes in the Underworld, duplicate lava, and soon you’ll have enough to start building automatic kill systems. At this stage, farming shifts from manual to semi-automatic.
Closed movement pipes stop flying enemies from reaching you. Conveyors move loot directly to your character. Lava becomes a controlled killing tool instead of a hazard. Mimics can even be farmed one after another using conveyor-fed traps.
At this point, aim for 400 HP, Gladiator Armor, and a rail system extending toward the Shimmer island, which spawns at the same height as your main island.
Shimmer, Biomes, and Boss Preparation
The Shimmer allows powerful transformations. One of the most important early uses is converting Jungle Seeds into Mushroom Biome Seeds. Tossing a Life Crystal and Mana Crystal into Shimmer gives permanent regeneration buffs, which are invaluable in SkyBlock.
Once you reach 200 HP, around 10 defense, and have at least four NPCs, the Eye of Cthulhu has a chance to spawn naturally. Build a simple arena and don’t overthink the fight. Rails combined with rollers let you outrun most early bosses effortlessly.
While waiting, build artificial Jungle, Mushroom, and Desert biomes. Desert requires about 300 sand, which you can generate through slime potion crafting or obsidian processing. Extend a bridge to the edge of the world so Goblin Scouts can spawn and drop Tattered Cloth.
After Defeating the Eye of Cthulhu
The Eye drops an evil altar and Warp seeds. Place the altar wherever it’s convenient and plant the seeds to create a Warp biome. Build a Warp farm early, because enemies here are aggressive and disruptive.
Use the new ore to craft better weapons and a fishing rod. Summon and defeat the Goblin Invasion, rescue the Goblin Engineer, and buy Rocket Boots and the Tinkerer’s Workshop. Let the Corruption spread, farm materials, and summon the Brain of Cthulhu.
After defeating it, meteor events begin. Meteorite no longer breaks tiles but hits extremely hard, so positioning matters. Use meteorite and corruption bars to upgrade your gear.
Finally, summon and defeat Skeletron to unlock deeper dungeon progression and the Hellforge.
After Skeletron
With Skeletron defeated, dungeon farming becomes the next major system. A valid dungeon biome requires 250 dungeon bricks, unsafe dungeon walls for spawning, and correct vertical placement.
Once the Mechanic arrives, free her immediately and purchase activators, wrenches, switches, and wire. Dart traps, conveyor belts, and wired chests allow fully automated dungeon farms. In 1.4.5, activated chests automatically transfer items, which completely changes late-game automation.
Once wired correctly, the system farms enemies, loot, and progression while you stand safely out of reach.
From here, SkyBlock opens up in every direction. The rules are the same, but the scale changes.