Also, Technobabylon, published (but not developed) by the same people, Wadjet Eye.

https://store.steampowered.com/app/307580/Technobabylon/

While good, I thought Wadjet's Primordia, where you play a robot in a postapocalyptic civilization where humans no longer exist, was better:

https://store.steampowered.com/app/227000/Primordia/?curator...

Shardlight, another postapocalyptic sci-fi story, is also great:

https://store.steampowered.com/app/336130/Shardlight/?curato...

Wow, these were all outside my radar. Thanks for mentioning them!

Even thoughit looks like I would like the story setting of Gemini Rue, I am not sure whether I would like this game or not. The reviews mention action sequences; these are rather not my cup of tea.

I don't remember any action sequences, so they must be minimal. It's a point and click adventure.

There are a few, mostly when you're being attacked by Boryokudan on the streets of the initial world, but also when you're playing the second character and training your shooting skills.