# spring/spring

A powerful free cross-platform RTS game engine. - Report issues at https://springrts.com/mantis/

Repository: https://github.com/spring/spring
Canonical: https://ross.abutalabs.com/products/spring-spring
Homepage: https://springrts.com/
Language: C++
License: NOASSERTION
License Family: other
Topics: springrts, c-plus-plus, lua, strategy-game-engine, opengl, game-engine, real-time-strategy, rts
Last push: 2024-03-31T18:56:50+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 6463, "days_push": 885, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3977, forks 865 (observed 2026-08-28T04:08:30.957683+00:00)

## What it is
Spring is a free, open-source, cross-platform 3D real-time strategy game engine written in C++ with extensive Lua scripting support. It powers multiple community-made RTS games and supports single-player, LAN, and online multiplayer battles with thousands of units.

## Use cases
- play open-source RTS games like Balanced Annihilation
- build a custom real-time strategy game
- create custom maps for RTS battles
- script game logic and UI with Lua
- run large multiplayer RTS matches online or on LAN
- develop AI skirmish opponents

## When to choose
- you want to make or play an RTS with 3D terrain, physics-based combat, and thousands of units
- you need a mature engine with Lua customization for game-specific code
- you want cross-platform (Windows/Linux/macOS) RTS support with multiplayer

## When to avoid
- you are building a game in a genre other than real-time strategy
- you need a modern general-purpose engine like Godot or Unreal
- you require official commercial support or a permissive license (GPLv2)

## Facets
- artifact type: application
- maturity: active
- function: game-engine, graphics, simulation
- domain: gaming-tools, cross-platform
- platform: windows, cpp, lua
- tags: rts, real-time-strategy, opengl, lua-scripting, multiplayer, open-source, game-development, linux, macos

## Member repositories
- spring/spring (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:30.957683+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:24:18.943001+00:00, confidence not recorded.
  - readme: https://github.com/spring/spring (fetched 2026-08-28T04:08:30.957683+00:00, sha c1f10b5db9ce)
  - homepage: https://springrts.com/ (fetched 2026-08-29T09:17:39.803729+00:00, sha 4d229049cd2d)
  - site_page: https://springrts.com/wiki/About (fetched 2026-08-29T09:17:39.813010+00:00, sha 6190fe8d1076)
  - site_page: https://springrts.com/wiki (fetched 2026-08-29T09:17:39.815173+00:00, sha bed551a558e9)
- Data as of 2026-08-30T08:39:29.467469+00:00.