Nice ideas! Some already on my list, so we’re clearly on the same page.

Those last two combine in a cool way. If you have a machine that gives better outputs and requires faster inputs the longer it runs, then wiring all of its inputs to production boosters is good, but also hard because this sort of thing will encourage a very cramped design already.

Since this is happening inside a multiplayer game, where other players might not be doing automation gameplay, I want to be mindful of how much server horsepower an automation player uses. So giant Factorio-style megafactories aren’t a good fit (It’ll still be possible as a self-directed challenge, especially if you’re running a single player server, but it’ll need a hefty computer since I doubt I’ll optimize it as well as Factorio.)

Which means I can’t do Factorio’s thing where an X requires 10 Y requires 10 Z and the massive scale causes problems you need to work through, so I need to add complexity elsewhere to make factory play still challenging. Machines that require inputs from multiple different transport mechanisms are one way to do that. Another might be time-sensitive parts.

I’m up for suggestions on more ways to make particular machines a nuisance to work with.

I’m working on a 3D voxel game, where I plan to have automation mechanics eventually, so this has been on my mind.

In the current (very possibly changing) plan, the first automation tier will be conveyors that go straight into buildings, but later materials will be too delicate for conveyors and need to use pneumatic pipes, and the final tier will include materials that must be handled with Opus Magnum style swinging arms (which are also inserters).

I like changing the transport system is the best way to do progression in one of these games, because it’s directly tied to the map, and thus has the most options for subtlety and cascading changes. And having multiple separate systems feeding into the same process is of course good for adding complexity.

Cube 2 / Sauerbraten is apparently still being updated.

It’s been like 15 years since I played it lol. But I remember it being a good Quake/Unreal style deathmatch shooter with a really sick level editor.

you can do it you can do the thing