A downloadable 4X space strategy game for Windows, macOS, and Linux

Open Realm of Stars is an open source 4X strategy game. Developed
using Java.

Explore the galaxy

Move your fleet in a randomly generated galaxy. Encounter other species, and find new planets to colonize. Explore mysterious space anomalies.

Manage your own planets


Manage your planets gain access to better buildings and ships. Population management is key to acquiring more culture, research, metal and production.

Have diplomacy with other space faring races

Make friends and enemies while traveling to outer realms. Form trade alliances, and defensive pacts to establish technology trade with other races. Make good diplomatic relations all other realms and win voting for ruler of the galaxy.

Deep space combat


Fight enemies with customizable ship designs. Ship components have their own hit points and energy requirements to use them. Components will be rendered useless if hitpoints are depleted or energy requirements are not met. This makes space battles dynamic. A lucky shot by allied ship to an enemies fusion reactor will make them immobile on the battlefield. Fleets with advanced technologies have significant advantages, however luck or number of ships can sway the battle in your favor.

Conquering the planets

Conquer enemy planets. Drop bombs to clear out enemy troops, then deploy your own ground troops to seize control. Regular space weapons can be used for causing suppression to defending troops.

Leaders


Each realm can have unique characters called leaders. These leaders can act as governors, fleet commanders and rulers. Each of the leader will gain perks which give bonus(negative or positive) on task they are performing. Leaders have limited life span and they will die for old age, but new ones can be replace the old one. Some rulers can have heirs which will eventually replace parents. These leaders can have also internal power struggles in certain government types.

The history


After a game players are given a quick overview of major galactic events and how other realms did during the game. There will be also history events of all major events that leaders did during their time in the game.

The story

When you start the game, background story will be generated for your realm. At the end of the game you can see your realm's full story. There is also possible to see other realms' stories.

Features

  • Randomized galaxy with three different starting placements
  • 15 different space races to play
  • 22 different government types to play
  • 17 different starting scenarios where to start
  • Any realm can start as an elder realm even human player
  • Random events
  • Planetary events
  • Space anomalies
  • Space pirates
  • Privateering, trade fleets are actual ships which can be privateered
  • Possibility to steal other ships with tractor beam
  • Possibility to tame space monster with tractor beam
  • Diplomatic relations between realms (War, Peace, Trade war, Trade Alliance, Defensive Pact and Alliance)
  • AI remembers how it has been treated and will treat others accordingly
  • Possibility to have casus belli against realm which have treated your realm wrongly
  • Galactic Olympics to influence to other realms
  • Technology can be traded in diplomatic trades
  • If two realms are in alliance they won the game together.
  • Possibility to fake military power in the galactic news (Can be lower or higher)
  • Espionage ships and espionage missions with leaders
  • Leaders acting as rulers, governors and commanders
  • 6 Different technology branches each with 10 levels
  • Each new technology will give either new ship component, ship hull or planetary improvement or new option for espionage missions.
  • All ships are designed based on currently available technology
  • AI does not cheat and each AI is trying to make their own realm as strong as possible
  • 3 Difficulty levels to choose for each AI realm.
  • Turn based space combat
  • Planets can conquered with troops and bombs
  • Direct support for Philips Hue RGB lights


Download

Download
Open-Realm-of-Stars-0.26.0-pack.zip 170 MB
Download
Open-Realm-of-Stars-0.25.0-pack.zip 169 MB
Download
Open-Realm-of-Stars-0.24.0Beta-pack.zip 167 MB
Download
Open-Realm-of-Stars-0.23.0Beta-pack.zip 164 MB
Download
Open-Realm-of-Stars-0.22.0Beta-pack.zip 153 MB
Download
Open-Realm-of-Stars-0.21.0Beta-pack.zip 126 MB

Install instructions

Download Open-Realm-of-Stars-0.24.0Beta-pack.zip and unzip the zip file. Then double click Open-Realm-of-Stars-0.24.0Beta.jar and it should be running if you have Java installed on your machine.  If you do not have Java installed you can  download it from here: Adopt OpenJDK

If you want to run Open Realm of Stars from command line run it with following command: 

java -jar Open-Realm-of-Stars-0.24.0Beta.jar

Development log

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Comments

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Looks great! 

Just found out about this game because of the art you've published on opengameart.org. Looks fun! Can't wait to play it. 


I also love how you're still updating this game. That's pretty cool! Now if only I could have that same level of commitment rofl 

Looks interesting.
Too early for me, but I'll stay tuned.
Wish you well in your endeavour.