Projectile sound: projectile.wav by jeckkech -- https://freesound.org/s/391660/ -- License: Creative Commons 0

Explosion sound: 8-Bit explosion by Prof.Mudkip -- https://freesound.org/s/386862/ -- License: Attribution 3.0

Game Background Music: Pixel enjoyment by BloodPixelHero -- https://freesound.org/s/584075/ -- License: Attribution 4.0

Title Background Music: Press Start (1) by Beetlemuse -- https://freesound.org/s/529219/ -- License: Attribution 4.0

Font: Press Start Font Family by codeman38 - Available from: https://www.1001fonts.com/press-start-font.html#license - Free for commercial and personal use.