u should update to 6.3 and 6.4 when it comes out

There is no way to update and continue the campaign.

You are developing a very impressive youtube channel, congratulation !
I discovered cataclysm DDA with your videos .

Thank you for your kind words. I am glad you are enjoying yourself!

Removing gases can be done by selecting the gas you want to remove, and un-ticking the add gas button.

I somehow decided it is a good idea to enrich the athmosphere by Nitrogen Dioxide.

I noticed that, but chemistry isn't my strong point and I actually wasn't sure about the differences between Nitrogen and Nitrogen Dioxide, so I decided to say nothing

No, the multiplier makes the engine larger.

Jump Drive Efficiency:
Divide the size of the ship you want to jump by the Jump Drive Effiiency and you have the size of your standard, run off the mill jumpdrive.

This jump drive can (with a squadron jump) take a total of three ships (the jumpship itself plus two other ships of equal or smaller size) through a jump point and will arrive at a random point within a radius of 50,000km around the jump point on the other side.

Now, if you want to take two additional ships with you, for a total of 5, you have to use (Max Jump Squadron Size-5 (size x 1.2) and your jumpdrive will be 20% larger.

If you want to appear further away from the jump point, in order to avoid a beam base parked on the jump point, for example, you can go for Max Squadron Jump Rdius 250k (size x 1.1), so your jumpship and company will appear at a random spot in a radius of 250,000 km around the jump point, again increasing the size of your jumpdrive by 10%.

From what I understand the multiplier is on the actual size of how big the jump engine will be. If you want a fancy jump engine that can jump with a bigger group of ships or arrive further from the jump point, the jump engine size will be increased with the multiplier.

So lets say you have Jump drive efficiency 8 this means a jump engine for a 130'000ton ship will be 16'250 ton. A jumpdrive that can take more ships and arrive further from the JP for jump point assaults might have size multiplier 1.2 which means the jump drive would be 19'500 ton size instead.

I doubt this is something you have to worry about for non-combat freighters.

So that is... wait. I am a bit confused. The jump drive efficiency reduces size of the jump drive. And the multiplier does the same thing? I got confused because it talked about normal engines x jump drive but the explanation was not clear at all.

After some time I turn to you guys for advice.

In my last recorded episode (some 10 episodes from what I have already published) I stumbled across a technology "jump drive multiplayer" that I somehow missed before. It spoke about size difference between the size of the jump drive and size of engines but I wasn't really sure what it means. When I looked across the wiki and forums I couldn't find any information either. Is this something I need to calculate with?

The reason why I am asking is that I have came up with a project for my interstellar colonization that will create following task groups:
1x class I freighter (about 130 000 tons, jump engine around 20 000 tons)
2x class II freighter (about 130 000 tons, no jump engine) -> will only accompany the class I freighters

These will operate together but I need to know if there is a limit for the size of the jump drive when you compare it to the size of the engines.

Thank you!

The game has a set group of functions - Inhabited Worlds, Mining Colonies (Anywhere with just auto mines or mines), Listening Posts (Just sensors), etc; the game divides them based on what buildings you have there. There may also be more that I don't know of because I've never had a world that met the criteria.

Thanks for the tip! It really helped!