# 14. How does an Expedition work?

## How to get Hamsters?

By default, players don't have any Hamsters for expeditions. However, you can get them from various sources: the [<mark style="color:green;">Season Pass</mark>](https://rollercoin.com/game/market/season-pass), [<mark style="color:green;">sales</mark>](https://rollercoin.com/game/market/sales) (if active), various events, and more. Don’t miss out on the news!\
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Once you get a Hamster, it’s yours to keep.

## Stats and Upgrading

Every Hamster has a set of stats: 3 basic ones and one extra. The basic stats influence expedition performance: overall success and rewards gained. The extra stat works as a modifier.\
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You can improve these stats: each time your Hamster levels up, you get 1 point to allocate however you like.\
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Your Hamster levels up by earning experience from completing expeditions.

## How does Expedition outcomes work?

It’s built from three clear components:

* **Basic Chance** (based on stats)
* **Difficulty Influence** (based on Expedition difficulty)
* **Ability Influence** (from Hamsters)

Together, they form the final result.

### <mark style="color:$success;">Basic Chance</mark>

Your base survival chance is directly tied to your Hamster’s stats sum:

* Every Hamster starts with a **minimum of 20% survival chance**
* Higher total stats significantly increase your chances

For example, a Hamster with a sum of stats at 50 gets 20% survival chance, while at 100 it becomes 25%, at 150 — 33%, and at 300 it is 90% of survival chance!

### <mark style="color:$success;">Difficulty Influence</mark>

* Lower difficulty → increases your chance
* Higher difficulty → reduces it

The influence ranges from **+5% on easiest Expeditions** (Difficulty: 1) to **-5% on hardest Expeditions** (Difficulty: 10)

### <mark style="color:$success;">Ability Influence</mark>

Abilities that grant **Survive Chance** are applied directly to the final result.

For example, Guile with maximum sum of stats of 149 gets 33% of survival chance, and with his ability bonus of +5% of survival it is now 38%.

### More info

To get more details, please, be sure to read the Blog post about Survival Chance and Expedition changes:

[<mark style="color:green;">**Blog Post Link**</mark>](https://rollercoin.com/blog/dev-diaries-vol18)

## Choosing an Expedition

Before starting an expedition, you can choose which scenario your Hamster will take on. Choose wisely! **You can only send one hamster to one expedition at a time, and once it starts, it cannot be cancelled**!\
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Expeditions vary in duration, difficulty, and rewards. The harder the adventure, the better the reward!\
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Some rewards require your Hamster to have a specific stat. If your Hamster doesn’t meet the requirement, that reward won’t be possible to get.

<figure><img src="/files/xQzBLCn7J4Okx9VFZf3o" alt=""><figcaption></figcaption></figure>

If your Hamster gets unlucky, they’ll fail the expedition. In that case, they’ll receive fewer rewards, and the rewards can only be collected by paying a ransom. After a failed expedition, the Hamster will need twice as much time to heal and rest.

## What Does Each Expedition Attribute Mean?

Every expedition has several attributes:

* **Duration:** How many hours the expedition will take.
* **Difficulty:** The difficulty rating. The higher the rating, the lower the chances of your Hamster completing the expedition successfully.
* **Rewards Value:** An estimate of the average value of the rewards you might get from the expedition.
* **Rewards Amount:** An estimate of the average number of rewards you might get from the expedition.

## Why Do Expeditions Fail?

During an expedition, the Hamster faces many challenges and trials, and each of its skills is put to the test. Health and Luck are the most frequently tested attributes—these are the most crucial for survival during an expedition.\
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The longer the expedition and the more expeditions a Hamster has been on, the harder it becomes for them!

## How Does Hamster XP Progress Work?

Each Hamster has their own XP progression. The higher the level, the more XP is needed to level up. For example, level 2 requires 25 XP, while level 20 requires 1,000 XP.\
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The amount of XP earned depends on the duration of the expedition. For a 12-hour expedition, a Hamster earns roughly 500 XP.

## Resting

After every expedition, a Hamster needs to rest. If the expedition was successful, rest time is 24 hours, regardless of how long the expedition itself was. If the Hamster failed, rest time doubles to 48 hours.\
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If the Hamster has an extra attribute called Relax Time, rest time is reduced by the specified percentage.\
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Remember, while one Hamster is resting, others can still go on expeditions!


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