RTS game with the theme of Strategy by Design
Seven Kingdoms: Ancient Adversaries
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Europa Universalis 4 save game editor
Arianne is an engine to develop multiplayer online games like Stendhal
Open source FPS/RTS Game
Real-time Strategy
Online War system for IL-2 Sturmovik and Iron Front in ArmA 2
Cross-platform real-time strategy game (3D)
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
RTSish Game Engine
WeComeInPeace is a simple RTS game that aims towards multiplayer
God game: wage war from the stone age to the future
Fly around an island casting spells, summon monsters, collect mana, a
Computer-assisted miniature tank game.
Railway management game influenced by railroad tycoon.
A snarky 2D management game about building and running a dungeon.