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OpenSA (SA stands for Swarm Assault) is a real time strategy game that requires you to control huge swarms of ants, beetles, spiders, scorpions or wasps in a desperate attempt to control the landscape. No resources, no population cap, just build your army and smash the enemy!

You do not have to build anything, all you need to do is to start instantly producing units and conquer other colonies. Easy and simple!

The original game is hardcoded to 640x480 resolution and some of its mechanics are nowadays obsolete. That's why the idea of bringing this game to OpenRA engine has been born so everything can be either fixed or improved in the brand new engine.

The project's goals are:

  • Recreation the whole singleplayer campaign with almost identical gameplay.
  • Provide new multiplayer experience.
  • Provide easy modding.
  • Support for any resolution.
  • Be open source.
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Hello there folks!

Long time no see. As usual the progress was quite slow. During that production time, a lot new features were developed which I hope you will like. So without further ado, let me show you what you can find in the latest release!

  • More missions:

A lot new missions were created. Many thanks to Hooet (교니체) for your support!

new missions

  • Production Booster:

Have you ever played Swarm Rampage, the sequel of Swarm Assault? Whether the answer is yes or no, the idea for this new structure come from that game. This new building increases unit production in all team colonies by 10%. Exclusive to only custom levels.

production booster

  • Firepower Booster:

Another new structure which the idea was taken from Swarm Rampage. It increases firepower of all team units by 10%. Exclusive to only custom levels.

firepower booster

  • Tesla Defense Tower:

Want more? Here’s Tesla Defense Tower, loosely based on the one which you can find in Swarm Rampage.

tesla tower

  • Scorpions Defense Tower:

Since the very beginning my original plan was to make Scorpions Defense Tower with only one spear weapon. I decided to finish what I started, so now you’ll be able to place in maps scorpion defense turrets with either two or one spear guns.

scorpion tower

  • Beetles Defense Tower:

Beetle Defense Tower got some new art. Mainly due to fit its size to the 1x1 tile.

beetle tower

  • New HP bars:

OpenRA default HP bars were replaced with new ones, more faithful to Swarm Assault ones.

hp bars

  • Poison Mushroom creep plants

This update adds a new creep plant to the roster. It’s a Poison Mushroom for swamp world, as usual, it’s based on Swarm Rampage’s mushroom. This plant has been in the project for a while but I finally decided to finish it. The original idea was to recreate the plant from SR game, especially how its projectile worked. But after some thought, I decided to give to it the cluster warhead.

poison mushroom

  • Dragonfly artwork update:

The original Dragonfly artwork has a lot of holes in its sprites. It's rather minor change but always welcomed.

dragonfly2x


  • Sidebar got update:

The sidebar was updated to be more similar to the original Swarm Assault sidebar.

sidebar


  • And command bar was also updated:

commandbar


  • Legacy Map Importer - Tutorial:

Also for those who are interested in importing legacy maps from Swarm Assault, I made a tutorial how to do it:

And here other key changes:

  • Engine update.
  • Video support.
  • Projectiles are interpolated to 64 facings
  • Added missing scorpions AI for campaign. So that means scorpions can be used as 5th real faction in campaign.
  • Optimized auto pickup colony bit logic for units.
  • Easy and Hard difficulties were updated and added Very Hard mode too. Firepower is increased by 25% in Easy mode for player and is reduced by 15% in Hard mode and by 25% in Very Hard mode.
  • Updated clock animation for production palette. Now it is based on original one.
  • There was an issue where closing OpenSA game wouldn't close it entirely. It was still running in the background. That issue should be resolved now.
  • Moved special debug units to Support Power tab. They are available when debug mode is turned on.
  • Added two extra loading screens.
  • And more!

The full changelog can be read here:

Github.com


And as usual, I’d love to thank Mailaender and IceReaper for their help. Moveover, I’d love to also thank Hooet (교니체) for creating new custom missions and testing the project, you rock!

A new release - 20210321

A new release - 20210321

News 1 comment

A new version of OpenSA has been released. It's full of new features!

OpenSA released!

OpenSA released!

News 10 comments

The first pre-release version of OpenSA has been released!

Add file RSS Files
OpenSA Version 20230905

OpenSA Version 20230905

Full Version

A hotfix release which fixes quite big issue in map editor. Plus adds other minor fixes.

OpenSA Version 20230730 [OUTDATED]

OpenSA Version 20230730 [OUTDATED]

Full Version

A new release which adds a lot new goodies to the game.

OpenSA Version 20210523 [OUTDATED]

OpenSA Version 20210523 [OUTDATED]

Full Version

Another version which does some balance changes, adds additional mission and fixes.

OpenSA Version 20210327 [OUTDATED]

OpenSA Version 20210327 [OUTDATED]

Full Version

This is a quick hotfix to solve some glitches and balance issues. Moreover, this version adds two new custom missions.

OpenSA Version 20210321 [OUTDATED]

OpenSA Version 20210321 [OUTDATED]

Full Version

A new version of OpenSA which has 100 missions and a lot of new cool features.

OpenSA Version 20201107 [OUTDATED]

OpenSA Version 20201107 [OUTDATED]

Full Version 11 comments

Another version of OpenSA. It adds 31 more missions, does again balance changes and fixes some important issues.

Comments  (0 - 10 of 51)
Whiskyman
Whiskyman - - 7 comments

I really don't know whats the issue happening that I can't get this game to work and I just NEED to play it. I love the original Swarm Assault since I first got it in the year 2000.

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Dzierzan Creator
Dzierzan - - 826 comments

Whiskyman
Hi, you haven't even explained what's the issue.

Reply Good karma+2 votes
Whiskyman
Whiskyman - - 7 comments

Game won't even start for me. Crashes right after I click to run it with a message to check some logs. Tried on a few different laptops in both Windows 7 and Windows 10. So I have no idea how to make this work.

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Guest
Guest - - 698,852 comments

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ACE1918
ACE1918 - - 46 comments

I'm not sure if anyone else has already asked, but are there plans for adding Swarm Rampage in the future by chance?

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Dzierzan Creator
Dzierzan - - 826 comments

ACE1918
Hey! It's very unlikely to happen as IceReaper user would have to reverse engineer game asset containers for me and I am not so experienced with that game either. But as some say, never say never.

Reply Good karma+1 vote
Dzierzan Creator
Dzierzan - - 826 comments

Hi, I released a playtest version of OpenSA. I still want to add a few changes here and there, so expect a new proper version in 2023.

Link below:
Github.com

Reply Good karma+2 votes
Guest
Guest - - 698,852 comments

Hi, do you plan to translate this game into Spanish, for example?

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Dzierzan Creator
Dzierzan - - 826 comments

Hi! Only English language will be available. You can translate stuff on your own if you wish to do it.

Reply Good karma+1 vote
Guest
Guest - - 698,852 comments

Hi, game cant detect my installation or iso. Is there a way to manualy point the game to the folder with original game files?

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Dzierzan Creator
Dzierzan - - 826 comments

Hi. Just let it download all needed assets once you run the mod for the first time.

Reply Good karma+1 vote
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