Good job! You made a mistake in the description you change the angle with A or D. Nice concept and awesome pixel art.
Retro Alien Invasion
Use arrow (or A and D) keys to set the angle. Shoot with space or mouse click.
Made for #LowRezJam. I don't remember the name of the original Atari game, I'm not even sure if such a game existed in Atari times.
Art & Code: Ahmet Kamil Keleş
Music: cinichecuk (performence of The Ride of the Valkyries)
SFX: Uğurcan Orçun