SevTech: Ages at a glance
| Type | progression modpack: tech is unlocked age by age |
|---|---|
| Minecraft version | 1.12.2 |
| Mod loader | Forge - the modpack browser sets the matching version itself |
| Java | Java 8 - newer Java versions won't start Forge for 1.12.2 |
| Progression | per player - everyone unlocks the ages for themselves |
| Spin-off | SevTech: Ages of the Sky as a skyblock variant |
| Source | CurseForge - installable in the panel through the modpack browser |
| Bottleneck | newly generated chunks while exploring |
| Recommended plan | plan L - 6 to 8 GB is the usual range for the pack |
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SevTech: Ages server hosting
Prepaid from €2.99 / month, unlimited slots, no minimum term. The right plan is listed in the RAM table below.
Plans & pricesHow the ages work
In SevTech: Ages, the age a player has reached decides what they can see and build. It starts with tools made of stone and wood, followed by metalworking, machines and finally space travel. Items from later ages stay hidden until then; even ores only show up once the matching stage is reached.
One point matters for the server: progression is per player. Whoever is further ahead sees and builds things a newcomer doesn't know yet. In a group that's intended - but it is worth agreeing on before you start, so nobody accidentally skips the others' progression, for example by simply handing over items from later ages.
If you'd rather start on an island, pick the spin-off SevTech: Ages of the Sky. The ages principle stays, the world becomes skyblock - with similar consequences for the server as SkyFactory.
Java 8 and a world that keeps growing
SevTech: Ages runs on Minecraft 1.12.2 and needs Java 8. Forge for that version won't start on Java 17 or 21. You change the Java version in the web interface under Startup in the Docker image field, see changing the Java version.
Unlike skyblock packs, there is a lot of exploring - every new age sends the group looking for new resources. Generating new chunks is the most expensive work for the server. If it stutters mainly when players push into new areas, a moderate view-distance in server.properties helps more than extra memory.
Here too: Java 8 does not benefit from arbitrarily large memory allocations. With 8 GB, a server for a typical group is in the right range.
What to keep an eye on as the server owner
Most questions from players aren't bugs but the age system. "I can't find iron" or "the recipe is missing" usually means in SevTech that the required stage hasn't been reached yet. The quest book shows what gets unlocked next.
Updates work as with any modpack: the server and all players need exactly the same version. Because the pack is designed for a long run, back up the world before every update - backups are self-service with us, the steps are in creating backups.
Which plan for SevTech: Ages?
The thresholds below apply to this pack - a light Vanilla+ pack and a kitchen-sink pack with a hundred running machines behave completely differently. You can upgrade at any time without losing data and only pay the difference.
| Group | Plan | RAM | Price | Why | Order |
|---|---|---|---|---|---|
| Solo or duo | Plan M | 4 GB | €5.99 / month | Works to get started, but sits below the 6 to 8 GB that are usual for the pack. | Order M |
| 3-8 players | Plan L | 8 GB | €11.99 / month | The usual case - several players explore at once and generate new chunks. | Order L |
| Larger groups | Plan XL | 16 GB | €21.99 / month | When many players are spread across the map and many chunks stay loaded at once. | Order XL |
| When it stutters | Plan L | 8 GB | €11.99 / month | Check the view distance first - on Java 8, more RAM only helps so much. | Order L |
The memory is taken proportionally from the plan via -XX:MaxRAMPercentage - you don't need to maintain a fixed -Xmx. The basics are covered in the RAM guide.
Setting up SevTech: Ages on the server
- Stop the server in the web interface.
- Search for "SevTech: Ages" in the modpack browser - or "SevTech: Ages of the Sky" for the skyblock variant - and install it.
- Under Startup, select Java 8 in the Docker image field.
- If needed, adjust
view-distanceinserver.propertiesbefore the first start. - Start the server. The first start takes several minutes - don't cancel it.
- Wait for
Donein the console. Players install the same pack version and connect via IP and port.
Common pitfalls with SevTech: Ages
Server won't start
Cause: The server runs on Java 17 or 21. Forge for Minecraft 1.12.2 needs Java 8.
Fix: Switch to Java 8 under Startup - see changing the Java version.
Players can't find ores or recipes
Cause: Not a bug: the age that unlocks those items hasn't been reached yet for this player.
Fix: Check the quest book to see which stage gets unlocked next.
Stutters while exploring
Cause: New chunks are being generated - the most CPU-intensive task for the server.
Fix: Lower view-distance and check whether the load comes from generation - see lag and TPS.
"Mod rejections" when joining
Cause: Client and server run different pack versions.
Fix: Bring every player to exactly the server's version.