Might as well share this game that I have been working on for a while. For the past two years I have been working on Spaceships, a completely free/libre 2D space-themed shooter game. The core idea of this game is that you are a spaceship and your goal is to destroy other spaceships by shooting them with bullets that you fire.
Spaceships has two main game modes, singleplayer and multiplayer. Singleplayer consists of five levels as part of a story mode where you need to destroy all bot players without losing all your lives. Multiplayer is similar but more open-ended with a wide variety of game modes, including survival and capture-the-flag.
The website for this game is at https://spaceships.me and the repository is hosted on Codeberg.
