Jet Gunner is a single-player, 2D platform action game built around an overt 8-bit homage. Its pitch is classic run-and-gun combat: move through stages, fight gun battles and bosses, and take in the deliberately retro sound and visuals. The game’s six stages range from cities to flying airships, giving its action a variety of settings.
Weapons are a central part of the pitch, with examples ranging from beam blasts to a circular side-shooting weapon. Beyond the main stages, Challenge Mode offers 25 extra-difficult challenges, while Hardcore mode is described as an especially demanding way to play. Steam leaderboards add a score-comparison angle, and achievements provide another set of goals; the game is also listed as single-player.
Its retro presentation, boss fights, varied weapons and optional difficulty tests define the documented design, while the source also mentions additional levels and content as planned updates without establishing what has shipped.