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Celtreos News

Updated to 1.58

The next Celtreos patch is live!

Performance Improvements

Every single stage has had at least some minor optimizations applied but some will be more noticeably improved than others.

Artwork and Animation Improvements

As usual, a number of small tweaks throughout the game.  Some bosses have slightly modified artwork, among other changes. The “Laser” weapon has a new animation when it hits something.

Game Controller UI Tweaks

If you use a PlayStation controller, the game UI will now show “X” and “O” buttons instead of “A” and “B” (though the controllers always worked either way).  Also, the Options screen now gives more room for game controller names, preventing longer names from running into nearby buttons.

Nominate Celtreos for “Labor of Love”

Celtreos has released 56 free updates so far!


[h2]Do you want to nominate Celtreos for the “Labor of Love” award?[/h2]

Over time, most updates to this game have been major improvements, averaging once a month:
  • More stages
  • Entirely new weapons
  • Improved and expanded soundtrack
  • Refinements to artwork, animation and gameplay
  • More features such as 2-player mode with game controller support
  • Updated for the latest hardware and OS


Updated to 1.57

The next Celtreos patch is live!

Enhanced Soundtrack

A number of songs have been improved!  Also, the end-of-game story sequence has an entirely new song and a revised version of the credits music.

Artwork and Animation Improvements

As usual, a number of small tweaks throughout the game.  Several bosses have more detailed artwork, among other changes.

“Big Sur” and Apple Silicon

The game has been tested on the new macOS “Big Sur” release and is supported.  It has also been built with direct support for both original Intel Macs (x86_64) and new Apple Silicon Macs (arm64).

Updated to 1.56

The next Celtreos patch is live!

New Negative Item “Reduced Range”

Be careful…there is yet another power-down in the game, “reduced range”!  This will significantly limit the distance that your weapons can reach, for several seconds.

New Enemies

There are even more types of foes in the game!  You can see them in stages such as “Hyperspace Pursuit” and “Colony Evacuation”.

Artwork and Animation Improvements

Lots of small new details all over the place!  Several enemy projectiles or firing effects have been improved.  Even your player ship’s tail exhaust looks cooler now.  The background in “Hyperspace Pursuit” is now a lot more intense, and some other game graphics have been tweaked as well.

Updated to 1.55

The next Celtreos patch is live!

Extra Boss in “Shipyard Attack”!

At the end of the game there are now two boss fights, back-to-back!  The new boss has a wide variety of attacks and moves, some of which are not used by any other enemy.  Oh, and your ship’s sensors cannot detect how many hit points it has.  Prepare yourself!

More Base-Speed Options

You can now choose “X-Low”, “Low” or “Normal” base ship speeds in the main Options Screen.  These are particularly useful when playing with certain game controllers or other input devices that may lack precision.  The base speed is only the default; as before, your ship can still go even slower using the Slow mode in-game (e.g. Shift/Caps-Lock key or A/X buttons), and your ship still automatically moves a bit slower in dense-layout stages such as “Space Station” and “Refinery Raid”.

Game Tweaks

Minor gameplay improvements in various stages.  Small enhancements to some effects.  Also, a handful of optimizations to ensure a good frame rate in high-traffic cases (like lots of bullets on screen).