This is a free playable demo (runs in a web-browser), the full game will be available soon on Steam (sometime in July).
The game is the sort where you have to learn the patterns and strategically use your Smart Bombs and Overdrive power-up.
Rewards for being more efficient and saving all Astronauts, collecting Stars, conserving Lives and Smart Bombs, collecting all Medals and working your way through the ranks to achieve Fleet Admiral.
There are online Leaderboards and plenty of ways to better your score each time you play even when you have completed the demo.
Lots of hidden Easter Eggs with nods to Sci-Fi movies.
https://chaosmoongame.com/
The game is best played with a controller (such as XBox or PlayStation Dual Shocl), however there is a keyboard option too:
W, A, S, D to move (can also use Cursor Keys)
Q and E to switch Weapons
Enter = Fire
R/Shift = Overdrive (when meter is full of power-cells)
SPACEBAR = Smart Bomb
R/Ctrl = Start / Pause
BackSpace = Back out / GUI nav
Escape = Pause (in game)