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World 4 of IdleOn is Hyperion Nebula, giving you access to brand new skills, mobs and a new boss to challenge called The Troll. This guide will go over all aspects of World 4 and what you should be focusing on as you progress through the game.
Whilst World 4 does give you more areas of IdleOn to progress through, you should still continue working your way through previous worlds, as their bonuses all start to stack and give you plenty of resources, damage and upgrades.
- Blunder Hills - World 1
- Yum-Yum Desert - World 2
- Frostbite Tundra - World 3
Hyperion Nebula
Once you defeat normal Chizoar and obtain the Glacier Quartz from him, you'll be able to access Hyperion Nebula
The following areas are available in World 4:
World 4 Progression Guide
There are three main areas of World 4 to focus on.
The Laboratory is an AFK time-gate; basically in order to progress you need to park all your characters here for several weeks to get them to around Level 75. Since the time gate gets easier as you progress through the rest of the game (you gain Laboratory EXP bonuses that speed this up greatly), it might be ideal to park just a couple of characters here and progress through other areas of the game with your main.
The other two areas of the game work in tandem. Pet Breeding allows you to collect a new resource called Spices, which can be used to unlock meals at the Cooking area and upgrade your kitchens. Cooking meals offer several account-wide bonuses that are well worth leveling up, but it starts out very slow in the beginning as you upgrade your kitchens.
Ideally each day you should be attempting to hatch new pets, collect new spices and then unlock new meals. You don't need to leave characters AFK in the Cooking Area just yet as the bonuses for doing so are minimal at this stage and you're better off progressing towards World 5 and World 6.
Once you defeat the World 4 boss and unlock World 5, double back on yourself and access The Rift. Here you'll have several challenges to complete, but they unlock several useful bonuses like Trapper Drone, Skill Mastery and Stamp Mastery. Depending on how strong you area, you should be able to reach Rift 16-21 early on.
The Astro Colosseum is great for farming Pet Eggs used for Breeding. The final wave spawns a Mutated Mush, which has a high chance to drop Pet Eggs.
Once you have all those things covered, it's time to start working towards World 5!
There's not much point investing time upgrading your equipment just yet, as you should have enough damage to one-shot most mobs in World 4. Using the Amarok Gear is good enough, even all the way to World 6 thanks to the Upgrade Vault bonuses.
World 4 Town Shop
Here are all the items you can find in the World 4 Town Shop.
| Item | Price | Quantity |
|---|---|---|
 62  50 |
1 | |
 2 50 |
1 | |
| 15 |
5000000 | |
| 40 |
5000000 | |
| 6 |
10 | |
| 60 |
12 | |
| 45 |
30 | |
| 55 |
21 | |
| 27 |
300000 | |
| 80 |
300000 | |
| 40 |
300000 | |
| 3 |
300000 | |
 21 47 48 36  47 |
1 | |
| 10 |
1 | |
| 50 |
1 | |
| 7 |
1 | |
| 21 47 48 36 47 |
1 |
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