Do I install OpenRA first?

No. The winportable zip is a self-contained client. Stock OpenRA is the other edition on this game.

Combined Arms

Cross-era Command & Conquer total conversion. Standalone OpenRA portable — stock OpenRA not required.

RTS / Strategy · 2010 · ~350 MB · Open Source (GPL-3.0)

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Install Method — PlayBound installer

Combined Arms Windows portable. Does not need stock OpenRA.