Do you remember Frozen Fruit Frenzy, that 2000s game where you had to defend Earth against vegetarian aliens? This is a more modern take on the same idea.
TextOS is a command-line-based operating system whose goal is to provide a complete environment for creating and managing text and code. In the future, features such as internet access, retro-style games, and even its own programming language may be added.
My version of the entry Slack-Bot.