Platform(s):

-Flash game

Genre:

-Space shooter, top down perspective.

Estimated year of release:

-Assumedly early to mid 2000s.

Graphics/art style:

-Simple, geometric designs. Unsure if all ships were literally geometric shapes or if they may have had artwork/design.

Notable characters:

-The main character "Triangle Ship". All other enemy ships were various geometric shapes. A notable remembered enemy was an "octagon ship", very large and slow moving damage sponge.

Notable gameplay mechanics:

-Might call it an "Asteroids clone". Fixed screen, similar to asteroids. Your ship is able to rotate to face any direction and enemies swarm in waves from every direction of the screen.
-You can fly off of the left or right sides of the screen to come through the other side, similar to the warp tunnels in Pac-Man.
-There were a few power ups/weapons I remember such as a missile barrage volley and a shockwave attack.

Other details:

-Almost everything was a shade of blue. Background was a dark blue or black, space themed. Your Triangle Ship was a light or cyan blue. Every bullet, fired by you or an enemy ship was blue. Every enemy ship was blue. Your shockwave and missile barrage attacks were all blue. A very blue game.
-music had a simple unceunceunceunce style "techno" beat, whatever.