Just achieve a stable production of the sting science, and working on the ring one. IMO, Rubia is one of the best planet mods and I like the way you make these early research like a guide and let them run by throw them away and count in trigger so they don't block the vanilla science, plus you provide a recipe as a tiny free mall. I have only a few suggest just wish you to take a look, mostly graphic.

The Trashsteroids seems a little weird because of their transparency. Now they look like bubbles and as they got killed, they suddenly turned back to rock. I would like to see it keep solid for the all the time like normal asteroids. Or you can just using shadow as a hint that the Trashsteroids are coming.

And cliffs & rocks! I feel this planet is too flat and some cliffs may make it looks nicer.

And Crapapulta...I see the discussion, but I wish it can shoot something. It plays a pretty important role here, so I believe it deserve a better graphic. Probably just make some fake random projectiles or random blur effects as a part of its own animation and loop it when it is working?

Thank you for your feedback. We’re glad you had a good time with Rubia.

To the specific graphics:
1) The issue with no transparency is that they spawn at arbitrary spots on the surface. Imagine big opaque rocks popping into existence on screen at random spots every couple of seconds when looking at Rubia. I added the transparency because it was very distracting.

2) I always wanted cliffs and rocks. I was ultimately limitted by my undersranding of map generation, and too few people capable of explaining how to implement it in factorio. After a few weeks of trying, I gave up. If you look through the mod files, you will find many more assets for trash and rocks to be placed on Rubia’s surface, commented out because I could not get them to spawn without breaking other things.

3) The crapapult issue is tied to how factorio implements it. The crapapult animation is a working visualization + sprite sheet for the crapapult. There are no events raised either during crafting, so making it look like it is actually shooting just is not feasible in the factorio engine. The machine can randomly stop on any sprite in its sheet indefinitely, so a sprite that includes shooting/blur could stay there as a static image. Sorry, it just doesn’t work with the 2.0 factorio engine.