You'll be learning in minutes
FlashBoss runs on mostly anything. One hiccup to look out for is Windows Terminal dependency.
For the best experience with emoji display, make sure you have Windows Terminal installed. It comes pre-installed on Windows 11. On Windows 10, grab it free from the Microsoft Store.
macOS and Linux work out of the box. No special configuration needed.
If your machine struggles, you can pre-generate the audio files. Launch the game once, then exit by pressing 9 repeatedly until you're back at your terminal. From there, run ./FlashBoss cache -de (or FlashBoss.exe cache -de on Windows) - the game will have dropped you in the right folder. A tier can take up to 10 minutes. 2 minutes is long enough for a session. Read the Terminal section for more information.
If you received a Steam key, here's how to redeem it:
That's all you need to know. The game teaches you the rest.