Master of Orion II: Battle at Antares (OpenOrion2)

Console

IBM PC (MS-DOS)

Project

openorion2

Runs On

Linux · Windows · macOS

Version

v0.9.13 - v0.9.6 is out; Decomp Buddy installs it once it has passed the malware scan

Made By

• pavel-krush

Safety Report

Malware Scan

Scanned with ClamAV 1.5.4 on Nov 11, 2026: no known malware in its 3 downloads. Decomp Buddy only installs those exact files - if the project swaps one, it waits for a new scan.

Uploaded By

pavel-krush, who uploaded this project's earlier releases

License

GNU General Public License v3.0

Account

On GitHub since October 2026

Install

Get Game

• Decomp BuddySets it up for you · needs the free app: Get Decomp Buddy
• Linuxopenorion2-linux-amd64 · 26 MB · v0.9.13
• Windows PCopenorion2-windows-amd64.exe · 26 MB · v0.9.13
• Mac (Apple Silicon)openorion2-darwin-arm64 · 25 MB · v0.9.13
• Previous Version: Linuxopenorion2-linux-amd64 · 26 MB · v0.9.12
• Previous Version: Windows PCopenorion2-windows-amd64.exe · 26 MB · v0.9.12
• Previous Version: Mac (Apple Silicon)openorion2-darwin-arm64 · 25 MB · v0.9.12
• Source Codev0.9.13 · 31 MB

Downloads come from Decomp Buddy's own copy - the same files the app installs, scanned for malware. Most games still need your own copy of the original game to play, and the app sets that up for you.

The Project · Website

Decomp Buddy never hosts or downloads the original game. It sets up openorion2 and tells you exactly which file of yours to drop in - then checks it's the right one. A ready-made plan is published for this one, so no AI key is needed. This is a community project: we check it, but we can't guarantee it.

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