If you already own "Adventure game" - you're fine) Just wait for the second episode (and it's gonna be realsed soon!). Episode 1 - is for players who wants to but only first episode.

Why would you make a bundle of the full game and its first episode? That makes no sense. If you buy a bundle, then you buy it for ALL content. In this case your bundle consists of FULL game and Episode that is already part of the full game. Any person buying the bundle will pay for the 1 Episode twice this way. Where's logic in this?

引用自 sense：

Why would you make a bundle of the full game and its first episode? That makes no sense. If you buy a bundle, then you buy it for ALL content. In this case your bundle consists of FULL game and Episode that is already part of the full game. Any person buying the bundle will pay for the 1 Episode twice this way. Where's logic in this?

They did not think it throughly before placing on Steam. There's no logic, only lack of experience with Steam. Don't be too hard on them, it's their first game, next time they'll do better hopefully.

Bundle has a fixed 33% discount, so it's even cheaper than buying base game. And it's cheaper if you buy it while having Episode 1 too.

Yeah, it is odd, but maybe you can gift episode 1 to someone.

Maybe it is just inexperience that has led to this but they should sort it out or they could lose sales.

I own the other one that is on sale for £14.99 ,after downloading the 185mb game files the game folder is called :OdysseusS1E1_data
The game exe is OdysseusS1E1.exe .

According to the dev's comments above it also has episode 2 included as that has been released now as of 4th June 2018.

edit:
Yeh ,it seems to have:
Pilot episode
Episode 1
Episode 2

in the options screen ,so seems ok.

They seem to have been trying to give potential customers a way to buy
just episode 1 a bit cheaper than maybe buying the full package in one go.

Looks like they just haven't done it properly in one store page.