Oxygen Not Included (ONI): Gas Weight Ranking, Explained

Oxygen Not Included (ONI): The Weight Order and Characteristics of Gases ?️

Hello. Today I'd like to look at the weight order and characteristics of the gases you'll encounter in Oxygen Not Included (hereafter ONI). Understanding the properties of gases well is very important for keeping your Duplicants alive.

Gases naturally form layers according to their weight. Lighter gases rise to the top, while heavier gases sink to the bottom. If you make good use of this property, managing your base becomes much easier.

I think these scientific elements are exactly what makes Oxygen Not Included fun. Let's take a look.

ONI's Gases, from Lightest to Heaviest ⚖️

So now let's go through them in order, starting with the lightest gas.

1. Hydrogen (1.00794 u) - the lightest gas, with the characteristic of collecting at the very top of your base.
2. Oxygen (15.9994 u) - the gas essential for Duplicants to breathe.
3. Polluted Oxygen (15.9994 u) - the same weight as oxygen, but harmful to Duplicants' health.
4. Natural Gas (16.044 u) - a useful resource used as fuel for generators.
5. Steam (18.01528 u) - a gas created when water is heated; it can be used with steam turbines.

Medium-Weight Gases ?️

1. Sour Gas (19.044 u) - a dangerous gas produced when petroleum is overheated.
2. Chlorine (34.453 u) - has a disinfecting effect, but is toxic to Duplicants.
3. Carbon Dioxide (44.01 u) - heavy, so it has the characteristic of sinking to the floor.

Heavy Gases ⚓

Now, finally, let's look at the heaviest gases.

1. Molten Metals (50 u and above) - metals such as iron, copper, and gold vaporized at extreme temperatures. - Very hot and dangerous, so be careful.
2. Super Coolant Gas (190 u) - one of the heaviest gases, used in cooling systems.

Gas Management Tips ?

Once you know the weights of the gases like this, it should help a lot with managing your base efficiently. For example, since hydrogen always rises, it's good to place a hydrogen generator in the upper area, and since carbon dioxide sinks, it's effective to put CO2-handling facilities in the lower area.

Understanding and making use of the properties of gases is one of the key fun elements of ONI. I hope this information helps with your gameplay.

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