I made a terminal game called Digital Virus. It's a logic puzzle where you predict how a 4-digit code mutates after each wrong guess. Starts simple but gets tricky with combo rules at higher levels. Wrote it in C to feel like those old 90s games. No graphics, just numbers and logic. Source is on GitHub: https://github.com/Ferki-git-creator/Digital-Virus

Curious what you think - especially if you remember when games came on floppies!