![Unnamed Space Idle 2](https://gameplay.tips/wp-content/uploads/2023/07/Unnamed-Space-Idle-2-678x381.jpg)
USI Guide to Tier 4 Base with Helpful Tips
This base is unlocked by clearing Sector 54. Your primary focus early on is mats income for the first 4 slots, then you can start working on parts income for some slots.
Some Notes:
- Do NOT level up parts too much, since the drain is very big early on.
- In any setup that contains parts, you can replace parts with components.
- For AFK setups, use the parts-focused setup of your choice, then replace one of the parts with a component.
![](https://gameplay.tips/wp-content/uploads/2024/06/1-324.jpg)
More mats income after unlocking both of the 2e7 mats slots.
![](https://gameplay.tips/wp-content/uploads/2024/06/1-325.jpg)
Early half mats & parts setup.
![](https://gameplay.tips/wp-content/uploads/2024/06/2-152.jpg)
The next 3 setups have both of the 2e9 mats slots unlocked. There’s a mats-focused one, a parts-focused one, and a half-mats-and-parts one.
![](https://gameplay.tips/wp-content/uploads/2024/06/3-113.jpg)
Reminder: you can replace one of the parts with a component to turn the setup below into an AFK setup.
However, since the drain is pretty big this early on, AFK setups might not be viable yet.
![](https://gameplay.tips/wp-content/uploads/2024/06/4-86.jpg)
![](https://gameplay.tips/wp-content/uploads/2024/06/5-69.jpg)
The next 3 setups have both of the 5e9 parts slots unlocked. You can start levelling up parts a little bit.
As usual, there’s a mats-focused setup, a parts-focused setup, and a half-mats-and-parts one.
![](https://gameplay.tips/wp-content/uploads/2024/06/6-53.jpg)
Reminder: you can replace one of the parts with a component to turn the setup below into an AFK setup.
However, since the drain is pretty big this early on, AFK setups might not be viable yet.
![](https://gameplay.tips/wp-content/uploads/2024/06/7-43.jpg)
![](https://gameplay.tips/wp-content/uploads/2024/06/8-34.jpg)
The next 3 setups have both of the 2e11 mats slots unlocked.
![](https://gameplay.tips/wp-content/uploads/2024/06/9-29.jpg)
Reminder: you can replace one of the parts with a component to turn the setup below into an AFK setup.
However, since the drain is pretty big this early on, AFK setups might not be viable yet.
![](https://gameplay.tips/wp-content/uploads/2024/06/10-25.jpg)
![](https://gameplay.tips/wp-content/uploads/2024/06/11-20.jpg)
The next 3 setups have both of the 5e13 parts slots unlocked. It is probably safe to level up parts alongside mats at this point.
![](https://gameplay.tips/wp-content/uploads/2024/06/12-18.jpg)
![](https://gameplay.tips/wp-content/uploads/2024/06/13-16.jpg)
Reminder: you can replace one of the parts with a component to turn the setup below into an AFK setup.
![](https://gameplay.tips/wp-content/uploads/2024/06/14-11.jpg)
The next 3 setups have both of the 2e15 mats slots unlocked.
![](https://gameplay.tips/wp-content/uploads/2024/06/16-6.jpg)
![](https://gameplay.tips/wp-content/uploads/2024/06/17-6.jpg)
Reminder: you can replace one of the parts with a component to turn the setup below into an AFK setup.
![](https://gameplay.tips/wp-content/uploads/2024/06/18-3.jpg)
The next 3 setups have the 2e18 mats slot unlocked.
![](https://gameplay.tips/wp-content/uploads/2024/06/19-2.jpg)
![](https://gameplay.tips/wp-content/uploads/2024/06/20-2.jpg)
Reminder: you can replace one of the parts with a component to turn the setup below into an AFK setup.
![](https://gameplay.tips/wp-content/uploads/2024/06/21-1.jpg)
The next 3 setups have the 5e17 parts slot unlocked.
![](https://gameplay.tips/wp-content/uploads/2024/06/22-2.jpg)
![](https://gameplay.tips/wp-content/uploads/2024/06/23-1.jpg)
Reminder: you can replace one of the parts with a component to turn the setup below into an AFK setup.
![](https://gameplay.tips/wp-content/uploads/2024/06/24-1.jpg)
All the setups below will assume you have all slots unlocked. The better parts/components setups shortly after unlocking all slots will require using 4 drain reducers to maximize drain reduction.
Eventually, you can use 2 drain reducers without having negative income.
![](https://gameplay.tips/wp-content/uploads/2024/06/25-1.jpg)
Components-Focused Setup:
It maximizes drain reduction while maximizing components income. The component can be replaced with a part, and if you do, you can replace the part in the bottom-right (and the 3 drain reducers affecting it) with mats and boosters.
![](https://gameplay.tips/wp-content/uploads/2024/06/26-1.jpg)
AFK Setup:
![](https://gameplay.tips/wp-content/uploads/2024/06/27-1.jpg)
If you are far enough in the game, then the 3 setups below will be sustainable, despite using 2 drain reducers.
![](https://gameplay.tips/wp-content/uploads/2024/06/28-1.jpg)
![](https://gameplay.tips/wp-content/uploads/2024/06/29-1.jpg)
![](https://gameplay.tips/wp-content/uploads/2024/06/30-1.jpg)
I sincerely hope this was helpful. Good luck to you!
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