Top 10 freeorion.org Wettbewerber

glest.org

glest is a free 3d real time strategy game, available for several operating systems and that can be modified using xml and a set of tools.

freecol.org

freecol - a turn based strategy game

freeciv.wikia.com

Every event or action should have information about which versions of Freeciv support it. Important: Anything documented about unreleased versions can change at any time before the final release. An argument with a question mark '?' is allowed to be empty. The empty value is 'nil'. There are several contexts where scripting is used in Freeciv. Not everything documented here can be used in every context. For instance, methods to read game state can be used in most contexts, but methods to...

openttd.org

an open source simulator based on the classic game transport tycoon deluxe. it attempts to mimic the original game as closely as possible while extending it with new features.

gog.com

Connect GOG GALAXY 2.0 with other gaming platforms and bring together games you play and the friends you play them with in one powerful app. With GOG GALAXY 2.0 you won't have to juggle between multiple clients to access your games and see what your friends are playing. Join the Open Beta and help us shape the app!

hedgewars.org

hedgewars! it's a blast!