# 4digits

> free game software

**Wikidata**: [Q133574070](https://www.wikidata.org/wiki/Q133574070)  
**Source**: https://4ort.xyz/entity/4digits

## Summary
4digits is a free game software application based on the logic game "bulls and cows." It is classified as both free software and a letter game, distributed under terms that allow users to freely run, study, change, and redistribute it. The project is maintained on SourceForge and tracked via Launchpad.

## Key Facts
- **Entity Name:** 4digits
- **Alias:** foudigits
- **Category:** Instance of **free software** and **letter game**
- **Basis:** Based on the game **bulls and cows**
- **Website:** `https://fourdigits.sourceforge.net/`
- **Project ID:** 4digits (on Launchpad)
- **Screenshot:** Version 0.4 screenshot available (`4digits_0.4_screenshot.png`)
- **Source Verification:** Website reference retrieved on 2025-03-28 via `https://launchpad.net/4digits`
- **License/Usage Rights:** Inherits characteristics of **free software**, allowing users to run, study, change, and distribute the software and its modified versions.

## FAQs
### Q: What type of software is 4digits?
A: 4digits is free game software classified as an instance of a letter game. It is based on the traditional game "bulls and cows."

### Q: What are the user rights associated with 4digits?
A: As free software, 4digits is distributed under terms that grant users the freedom to run, study, change, and distribute the program, including modified versions.

### Q: Where is the 4digits project hosted?
A: The project maintains a website on SourceForge at `https://fourdigits.sourceforge.net/` and has a corresponding project entry on Launchpad identified as "4digits."

## Why It Matters
4digits matters as a concrete example of free software within the gaming domain, specifically implementing the "bulls and cows" algorithm. By being distributed as free software, it provides users with the "four freedoms"—the ability to run, study, modify, and redistribute the code—which contrasts with proprietary software models. Its classification as a "letter game" and its availability on open-source hosting platforms like SourceForge and Launchpad highlight its role in the broader free and open-source software (FOSS) ecosystem.

## Notable For
- Being a specific implementation of the **bulls and cows** game logic.
- Classification as a **letter game** and **free software** simultaneously.
- Availability on **SourceForge** and tracking via **Launchpad**.
- Providing the **four freedoms** (run, study, change, distribute) characteristic of the free software movement.

## Body
### Definition and Gameplay
4digits is a free game software application. It is explicitly based on "bulls and cows," a code-breaking game. In the context of structured data, it is classified as an instance of a **letter game** as well as **free software**.

### Software Philosophy and Licensing
As an instance of **free software**, 4digits adheres to the definitions established by the free software movement. This classification implies the software is distributed with terms that allow users to:
- Freely run the software.
- Study how it works.
- Change it to suit their needs.
- Distribute it and modified versions to others.

This places 4digits in opposition to proprietary software, aligning it instead with the "four freedoms" and the broader open-source movement.

### Project Hosting and Identity
The project is accessible via its official website hosted on SourceForge (`https://fourdigits.sourceforge.net/`). It is also indexed under the project ID "4digits" on Launchpad, a software collaboration platform. The project data was verified with a reference date of 2025-03-28.

### Visuals and Aliases
Visual documentation of the software exists in the form of a screenshot for version 0.4 (`4digits_0.4_screenshot.png`). The entity is also known by the alias "foudigits."

## References

1. [Source](https://launchpad.net/4digits)