> For the complete documentation index, see [llms.txt](https://wiki.trains.cards/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.trains.cards/game-mechanics/advanced-mechanics/century-trains.md).
# Century Trains
### What Are Century Trains?
Century Trains are Locomotives with mysterious origins and extraordinary utility. Legend has it they **don't require fuel** to operate. Some people say they can even **travel through time.**
To come into the possession of such a train is surely to your benefit—but forging one is not going to be easy. You're going to need some help from **Oil Zone Otto** and the **Century Mechanic**...
### How to Collect Century Train Parts
Every now and then, you'll meet Otto during an [Asset Encounter](/game-mechanics/npc-encounters/asset-encounters.md#oil-zone-otto). When Otto appears, that means he's stumbled across a Century Train Part.
You can **purchase CTPs at a discounted price** during these encounters, **or you can buy them from** [**the Marketplace**](/game-mechanics/the-user-interface/the-marketplace.md#buying-century-train-parts) after declining to buy a part from Otto.
If you decline to buy the part from Otto, you'll **still be able to take advantage of his discount for 10 minutes**, when you buy from the Marketplace. After that, you'll have to pay full price.
### **Fusing CTPs to Your Train**
On their own, each CTP can be fused to one of your existing trains to give the train a **permanent stat boost**.
To fuse a CTP to your train, follow these steps:
1. Open up the Marketplace and click the Parts tab.
2. Click on the arrow below Otto to switch to the Mechanic page.
3. Make sure you're on the Fuse sub-tab, then select the CTP you'd like to fuse.
4. Click the "CHOOSE LOCO" button and select the Locomotive you'd like to upgrade.
5. You'll see a preview of the stat boost your Locomotive will receive.
6. Click the "FUSE FOR 5 AMP" button to perform the fusion.
A Locomotive can only handle so much upgrading before the anomatter in the CTPs makes it unstable. To prevent your train from succumbing to the anomatic pressure, **a Locomotive's stats have predetermined upgrade caps:**
| Distance | Luck | Hauling Power | Speed |
| :------: | :--: | :-----------: | :---: |
| +60 | +15 | +40 | +25 |
Additionally, **each fusion will cost 5 AMP.**
### Forging a Century Train
To get your hands on a Century Train, you're going to have to bring all 18 unique CTPs to the **Century Mechanic,** who will assemble them for you, for a cost. [Click here to see a full index of the CTPs you'll need to collect](/game-mechanics/advanced-mechanics/century-trains/century-train-part-index.md).
Coming soon!