About Difficult Upgrades
From mod.ioAdvanced Upgrade 1 and Modern Upgrade 1 include the lower tier Upgrade 4 as a requirement
This mod alters the recipes for Advanced Upgrade 1 and Modern Upgrade 1 by including the lower tier Upgrade 4 as a requirement; eg. AU1 will require BU4 and MU1 will require AU4.
Compatibility
Tested on v0.12.x
Installation
Unzip in the Server folder of your ECO server.
Caution
This mod will make AU1 and especially MU1 prohibitively expensive (which they kinda should be), so make sure your community understands how much of a pain that will cause. But it will also be an amazing challenge and make the rewards that much more... rewarding! :)
Highlights
From source dataFootprint
Rated a light load on a server.
Last update
Its author last shipped an update 8 mo ago.
Difficult Upgrades on Nxeon
From our catalogue- One-click install
- Not available. One-click install isn't available for this game's mods yet. Download it and upload it to your server in Files.
- Server load
- light
- Smallest plan we suggest
- Eco — 8 GB (8 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 0.12-1, released 2026-02-17
Run Difficult Upgrades on a Eco server
Deploy a server above, then upload the file in Files.
What kind of mod it is
From the catalogTechnology & automation
Machines, power, logistics and automation.
Compatibility
- Game
- Eco
Verified at the source
- ✓mod.ioOfficial listing, checked 2026-10-16Open ↗
- ✓Authorbiseque, as published on mod.io
- ✓LicenseNot published by the sourceFree
