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Celtreos
Updated to 2.0
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Updated to 1.99
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New “Lancer” Weapon
[p]A new weapon “Lancer” has been added to the Devastator Series, and it can also be used in custom arrays. This means that the 5 main Series now all have unique opposing-movement weapons (instead of Magnetic Mine being present in two of them).[/p][p]This weapon is fast, shoots primarily in the opposite direction that you move your ship, and it will start to seek enemies after a short time.[/p][p][/p]UI Updates
[p]A number of improvements to UI elements have been made, including a tweaked mouse-hover effect, and checkbox labels are now focusable/clickable and can activate their associated setting. Various web-link-style buttons work better than before, and a minor French localization issue was fixed in one of them.[/p][p]A water-rippling warp animation has been added to the light reflections in the “Last Stand” stage.[/p][p]The recently-added Relative Touch Controls setting no longer adds a small X-offset to the ship position when on mobile devices. (This offset remains if the mode is turned off though.)[/p][p][/p]Song Update
[p]The “Evasion” song (used in the “Planetary Approach” stage) has been updated.[/p] Nominate “Celtreos” for the “Labor of Love” Award!
“Celtreos” is a “Labor of Love”!
[p]To nominate “Celtreos” for an award, click here.[/p][p][/p][p]This game was first released in 2017 but has been updated over 95 times (including late 2025), on average once a month, making huge additions such as:[/p]- [p]New stages[/p]
- [p]Improved soundtrack and brand new songs![/p]
- [p]Two-player mode[/p]
- [p]Many, many new weapons over time, and the ability to customize weapon arrays[/p]
- [p]An entirely new XP system for upgrading weapons during the game[/p]
- [p]New ships, and an entirely new ship-customization mode[/p]
- [p]New power-ups and other game items[/p]
- [p]New enemies, and even a 2nd end-game boss![/p]
- [p]New gameplay features such as Achievements, Fragments and rotating stages[/p]
- [p]New controls such as ship slow-down and changing default speed[/p]
- [p]Several new settings, including “Quick game” and “Hard difficulty”[/p]
- [p]Improved game artwork continuously (making more detailed backgrounds for instance)[/p]
- [p]Support for the latest operating systems, computer hardware and game controllers![/p]
- [p]Added support for the Apple TV[/p]
- [p]Redesign to support wider-screen format[/p]
- [p]Upgrading effects and voice to support positional sound[/p]
- [p]Continuous improvements to performance and other low-level aspects of the code[/p]
- [p]Localization of the in-game UI to French[/p]
- [p]Support for system Accessibility settings to adjust text size (small, normal, large)[/p]
- [p]Support for 120 FPS[/p]
Updated to 1.94
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Music Updates
[p]Many songs have been tweaked, including: Evasion, Mystery, Portension, Opposition, Trepidation, Diminution and Establishment.[/p][p][/p]Gameplay Updates
[p]There is a new weapon mount type, “Reverse V”! Similar to “Crossover” but focused on the reverse angle with a wider expanse, this moves your weapons fire along a rotated V path to cover primarily the area behind your ship.[/p][p]Minor tweaks to certain stage content, such as “Jungle Cave” and “Shipyard Attack”.[/p][p][/p]Performance
[p]General improvements to game responsiveness in certain situations.[/p] Updated to 1.93
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Performance Improvements
[p]Fixed a case where the frame rate could struggle significantly if the system was rapidly refreshing the screen while many sound effects were playing.[/p][p][/p]Artwork Improvements
[p]More artwork tweaks have been made to certain ships and background elements.[/p] Updated to 1.92
New Setting “No Negative Items”
This new setting prevents all negative items from spawning in the game, which tends to make the game significantly easier to play. (This includes all red-orb items like slow-down, destroy-weapon, reduce-range, reduce-power, zero-score, etc.)
Artwork Improvements
More artwork tweaks have been made, mostly noticeable on the title screen and the first stage, “Colony Evacuation”.
Bug Fixes
A stage-related trophy was accidentally awarded by starting any game. While this trophy will not be deleted as part of the fix, for new owners of the game it will now trigger under the correct conditions.
Also, while not strictly a bug, it could be confusing if external audio (such as Apple Music) was preventing music selections during the game; new explanatory text makes this clear when the setting is disabled.
Updated to 1.91
Improved Performance
Game physics and other explosion effects have been modified to perform better in some situations.
Hit-Box Changes
Each of the 7 player ships has had its hit-box reevaluated to be slightly more accurate for the shape of the ship, and noticeably smaller in normal difficulty. The hit-box area is also slightly larger when Hard difficulty is enabled (not bigger than before though).
Music Updates
The “Decoration”, “Acquisition” and “Evacuation” songs have all been improved slightly.
Updated to 1.90
New “Lateral” Weapon
A 5th sideways-class weapon, “Lateral”, has been added to the Plasma Series (and can be used in custom weapon arrays). This fires modules above and below your ship that damage anything they touch, while also periodically firing forward or backward from the current locations of the modules.
Furthermore, this weapon has 5 variations because it fires your default-class weapon (Beam, Gun, Laser, Ring or Rocket)! Some variants, like Beam, can produce substantially different covering fire.
New XP×4 Item
Similar to existing XP×2 but this item quadruples accumulated experience points for the current weapon. It does not last long!
Minor Gameplay Updates
Power-ups now “stack” on the left side to an extent, if you pick up several of them at once.
The Razor weapon has been slightly modified to have a tighter firing range.
A problem with the physics of the Bumper has been fixed, that made the ship more vulnerable to regular fire (even though it was much less vulnerable to walls).
The UI has been tweaked so that buttons bound to the Return key have a slightly different style.
Soundtrack Improvement
Minor changes to the “Mystery” song (used in the “Dark Nebula” stage).
Updated to 1.89
Enhancements to “Jungle Cave”
The tree/wood artwork in this stage is now significantly more detailed. Also, foreground logs that are obstacles are brighter so they are easier to avoid. The stage layout has been tweaked in a few places.
Clouds You Can Shoot
In the “Dark Nebula” and “Orbital Defense” stages, certain clouds are now mostly opaque and can hide enemies and items, yet they are also vulnerable to weapons fire. If you shoot at these clouds, you will see hit marks and they will eventually fade away to reveal what is in them. Be careful, as hazards are active in the clouds whether you can see them or not!
Soundtrack Improvements
Certain songs have been tweaked, including “Establishment”, “Evacuation” and “Acquisition”.
Some noticeable artwork upgrades in the “Jungle Cave” stage. Certain clouds can now be destroyed to reveal items in “Dark Nebula” and “Orbital Defense”.
Updated to 1.88
Improved Performance
The game is now better at responding in high-congestion areas, such as stages with lots of walls or enemies.
Also, scrolling up or down is now more responsive so it is easier to move around.
Opposing-Movement Weapon Updates
All weapons in the opposing-movement class (“Tail Whip”, “Star Strike”, “Sweeper” and “Magnet Mine”) as well as effects that rotate (such as Prism and Barrier) now adapt to movement in more intuitive ways. It should be much easier to orient them in the way that you want.
Minor Gameplay Tweaks
Certain stages have had their content slightly updated, such as “Dark Nebula”. Also, the double-XP power-up now lasts slightly longer.