What is diskooloop-neon-repost?

diskooloop NEON REPOST is a vertical scrolling shooting game with a neon visual style, playable directly in a web browser without any installation. The entire game is a single HTML file, so you run it by opening index.html in a browser or hosting it on GitHub Pages, GitHub's free static site hosting service. The game is a vertical bullet hell shooter, a genre where your ship scrolls upward through waves of enemies and projectiles while you dodge and shoot back. You move with the arrow keys or WASD, and pressing Shift slows your movement for precise dodging, commonly called focus in this genre since it lets you find the small gaps between bullets. Your main special weapon is a WAVE beam, a powerful shot you can hold in reserve up to three times before firing it with the Space bar, letting you save it for a difficult moment. As you play, blue item pickups provide barrier protection that can absorb hits, and yellow item pickups add to your WAVE beam stock. The game includes boss battles, each with a warning screen before it starts and a transition effect when the stage changes or the boss is defeated. The background uses deep parallax scrolling, meaning multiple layers moving at different speeds to create a sense of depth, with planets passing behind the action. Vertical warp effects play during the game's opening, when stages change, and when a boss battle ends in victory. The game over screen picks a random message from a set list, and every one of these messages includes the Japanese word meaning space or universe. The game runs in any modern browser without extra setup. On macOS you can also double click the included launch script to open it directly instead of finding index.html manually. There is no server, no framework, and nothing to install, which keeps the whole project small and easy to share as a single file or a GitHub Pages link.