About Hard Cerys
From Factorio Mod PortalTweaks to Cerys. Radiative towers have reduced range and consume fuel faster, solar wind is dangerous to the player, repairing the reactor takes twice the resources, asteroids have higher HP, and other tweaks.
Hard Cerys
Difficulty tweaks for Cerys to add interesting challenge.
Getting started
No changes are made to terrain generation. As such, this mod is compatible with existing saves excepting that some areas previously thawed by radiative towers will now be frozen.
Tweaks
- Cerys is pitch-black at night.
- Solar wind is dangerous to the player.
- Heating towers have reduced radius and consume solid fuel at an increased rate.
- Gamma radiation deals increased damage.
- Repairing the reactor takes twice as many resources.
- Asteroids on Cerys have increased HP.
- Nitrogen-rich mineral processing requires more sulfuric acid to craft.
- Fulgoran cryogenic plants plants draw +50% energy.
- The 'Discover Fulgoran cryogenics' recipe now requires various products of nuclear scrap recycling to craft it.
- 'Cerys cargo drops' research cost increased.
- If playing on ribbonworld, the map is even thinner.
See also
Highlights
From source dataGame versions
Built for Factorio 2.0.
Footprint
Rated a light load on a server.
License
Published under MIT.
Hard Cerys on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Factorio servers. We download it from Factorio Mod Portal, place it, and restart the server.
- Server side
- Required on the server
- Server load
- light
- Smallest plan we suggest
- Factorio — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.2.0, released 2026-10-25
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 1.2.0 | 2026-10-25 | 2.1 | n/a |
| 1.1.0 | 2025-10-19 | 2.0 | n/a |
| 1.0.13 | 2025-07-24 | 2.0 | n/a |
| 1.0.12 | 2025-04-22 | 2.0 | n/a |
| 1.0.11 | 2025-04-22 | 2.0 | n/a |
| 1.0.10 | 2025-04-22 | 2.0 | n/a |
Dependencies
- Required: [reserved]
- Required: Cerys
Declared by the newest build that lists any. Required ones are installed with it on one-click installs.
Run Hard Cerys on a Factorio server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogTechnology & automation
Machines, power, logistics and automation.
Runs on your server
From source side supportFactorio Mod Portal lists Hard Cerys as required on the server. Check its Factorio Mod Portal page to see whether players need it too.
Compatibility
- Game
- Factorio
- Runs on
- Serverrequired on the server
- Game versions
- 2.0
Verified at the source
- ✓Factorio Mod PortalOfficial listing, checked 2026-10-26Open ↗
- ✓Authorthesixthroc, as published on Factorio Mod Portal
- ✓LicenseMITFree
