# The Underground
## Reinventing the genre
STFU is a complete re-imagining of the first-person ship shooter genre made popular in the 1990's. The original generation of games that made this genre used static ships with no progression. Instead, you entered a level and used power-ups and weapons you found to wipe out your opponents and complete obstacles.
Taking place primarily in T*he Underground* — a series of hollowed out twisting tunnels and bases in the asteroid belt, STFU has been designed from the ground up with addictive single and multiplayer battle modes, class-based combat featuring:
* 20 ships with different roles
* Stateful progression
* Upgradable skills trees
* Resource collection
* Crafting
* Player generated content
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://little-orbit.gitbook.io/stfu/ships-that-fight-underground/the-underground.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
