I’ve always heard it described as Minecraft meets Primitive Technology. I would say that is quite accurate. Maybe some (optional) Don’t Starve like elements where you have to worry about the temporal rift (sort of like insanity) and drifters (largely at night).
Technology progression is much slower than Minecraft. Also much more involved. Want a stone axe? You have to place a stone on the ground and use another stone to knap it into shape first. Make an iron shovel? You have to heat up the ingot first and then beat it into shape on an anvil. If you are too slow and it cools down you have to heat it up again.
Farming has 3 nutrient groups, so fertilizers and crop rotation is important.
Leather making is a multi step process of soaking hides in various liquids.
It has a built in and very extensive guide/wiki. It also has a native Linux build.
I use a fork of the DeltaChat client called ArcaneChat. I like it. It is easy to setup and to get others into a chat. You just provide a name on startup and it automatically creates an arcane email account for you. Moving it to a second device is as easy as using the app to pull up a QR code or getting a code it produces. Making chats with other people is similar. You can scan a QR code or send an invite link.
Also has plugins. I have a chat with an editor app so everyone in my household can add to the grocery list for instance. But there are plugins for games, rss feeds, and bridges to other platforms though I havent used these so im not sure how well they work.
My complaint and the others in my household is notifications. You might send or receive a message but wont get notified until an hour or two later. That said the very latest arcane chat does add a new setting that is supposed to help with that but i havent been on it lomg enough yet.
Also, to my knowledge you cannot lock the app itself like Signal can.