Thank you very much! I'm glad you like the graphics!
That's right, it's a tribute to all the classic retro arcade shumps I loved during the 80s and the first 90s.
In fact, both the first graphics and the chiptune soundtrack were created from Sega Megadrive specifications ;)
Take a look to the demo, it's free!
https://volcanobytes.itch.io/galactic-wars-ex