About this domain

Why Keep Flying exists

Hi, I'm John O'Neill, founder of Spark Plug Games.

If this address looks familiar, there's a reason. keepflying.com used to be the home of Firefly Online, a game Spark Plug Games was building based on the TV show Firefly. It was announced in 2013. A lot of you signed up, followed along and waited for it. It was never released.

What we wanted to give you was simple: a ship and a crew of your own. A little piece of the frontier that was yours, with dents you earned and people you trusted to fly with you. We never got to hand that over, and it has stayed with us.

Keep Flying is a new, original game made in that spirit. It has its own setting, its own ships, its own crew and a lot of its own jokes. It's free to play, with no purchases, ads or paid shortcuts of any kind, and it runs in the browser on your phone or computer.

To everyone who signed up, played along and waited all those years: thank you. This one's for you.

How it's made

• Every ship, crew portrait and card is drawn by code from a seed: procedural vector art, not AI-generated images.
• Names, cargo, pirates and ports come from phrase lists written and curated by people, then shuffled by our "humor engine".
• We use AI coding tools to help code review the work we put into the server, and we're happy to say so. Helps us keep John's crazy code in check.
• The game is free. There's nothing to buy, nothing to cash out and no ads.

The fine print

Keep Flying is an independent game by Spark Plug Games. It is not affiliated with, endorsed by or sponsored by Fox or Disney, and it contains no Firefly content. Firefly and Firefly Online are mentioned here only to explain the history of this domain, and those names belong to their respective owners.

John O'Neill
Spark Plug Games