FIGHTORDER

The community knowledge base for the Spring RTS and Recoil engines and the games built on them — commands, units, mechanics, maps, and modding.

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The Complete Guide To Making A Spring Game

A full walkthrough of building a game from scratch on the engine — structure, content, and pitfalls.

Unit definitions reference

The complete UnitDef field reference — every property that defines how a unit behaves.

Engine Profiling

Finding and diagnosing performance bottlenecks in engine and game code.

Recent changes

2026-07-24 00:18:07 Recoil Engine
2026-07-23 23:35:16 Zero-K
2026-07-23 04:29:35 Beyond All Reason
2026-07-23 04:29:33 Spring RTS
2026-07-23 02:57:55 Recoil:Windows build environment, step by step
2026-07-23 02:57:54 Recoil:Tracy Profiling

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Games

Zero-K

Open-source RTS with physics projectiles, no unit build limits, and deep commander customization.

Beyond All Reason

BAR — large-scale modern RTS on the Recoil engine, free and community-driven.

NOTA

None Of The Above — a tightly-balanced annihilation-style total conversion.

Kernel Panic

Minimalist computer-themed RTS — three sides, no economy, pure tactics.

Engines

Recoil Engine

The actively-developed fork powering Beyond All Reason and modern titles.

Spring RTS

The original engine and the heritage this wiki is preserving.