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1-2 players, game controller support. NO in-app purchases. Over 45 minutes of music! 13 detailed stages, partly-random, with bosses. Tons of weapons, guards and special moves. Play in a window or in Full Screen.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Social Deduction Fest ends
Official stores with direct support.
Try this game before buying.
One or two players. Use a mouse or trackpad, keyboard (including Touch Bar), or 1-2 game controllers.
Steam version works on Mac (available for mobile and TV elsewhere); updated with support for all recent Mac hardware.
“Celtreos” is like the space shooters of decades past: tiny ship, big weapons, waves of foes, power-ups and obstacles.
30 different songs (over 45 minutes of music!)
You can even play your own music and auto-next-song for key game events
13 stages: a city, space station, ocean and more
Horizontal scrolling but more than one “screen” of vertical space
Start from any stage you want!
Each stage ends with a challenging boss
Wall layouts and spawn patterns are partially randomized
Choose from a huge arsenal of weapons and special abilities
10 different ships to choose from
Customize ship properties, such as gun mount locations and top speed
In-game power-ups with weapons, defenses and temporary powers (like Rapid Fire)
Power-down orbs with temporary inconveniences (like Weapon Freeze)
Set number of lives, and number of times that special abilities can be used
Play in a window or in Full Screen, and specify how much of the display to use in Full Screen
Set graphics quality to one of three levels
