Early game
- Instead of the usual ores generating, there is a "scrap" ore which you can recycle for copper and iron or any other mod-specific material.
- All usual terrain tiles would be replaced by trash tiles/textures (the whole planet is full of it)
- Instead of normal water, there is heavily polluted water (green or brownish color)
- There could also be pools of acid that contain sulfuric acid (from old batteries) which can be used in the recycling process
Mid game would focus on the usual expansion of factories and new facilities for new tech.
Late game
Late game would focus on terraforming (for example via a machine that converts tiles to grass and water). Maybe this step reveals new resources that could be used for rockets (for the sake of having the usual Factorio ending)?
This is just an idea that came up. Feel free to expand on it.
