I had Fable clone a game, it turned it into an arena combat AI trainer
I started off with a simple goal: port the game Soldat to Typescript. I ended up not only with the game, but with a full system to train AI bots to play my own game, building a neural net to train new bot AIs from tens of thousands of simulated matches with different strategies. It also runs live all the time on my website and has a news dashboard and you can replay any game exactly. It all was a very fun way to dig into Fable's capabilities. The bill if I had done this with API billing? Nearly $2000.
I had Fable clone a game, it turned it into an arena combat AI trainer launched on June 12, 2026 with 5 votes, #2,466 of 22,647 launches that month and more than 75% of that year's launches.
What it does
I decided to have Fable try to clone Soldat from the original source in Typescript. I ended up with an arena combat engine to train a game bot, while also pitting instances of Fable against itself in combat in a game that it made. This is Fable telling the story of this process.
I set out to port a 2002 jetpack shooter to the browser. I came away with sixteen bot brains fighting over a championship belt, a betting-floor dashboard, a newspaper that writes itself, and four neural-net students trained on recordings of the others. Every match runs identically every time, so any fight replays byte-for-byte from its seed. I planned almost none of it. I decided to have Fable try to clone Soldat from the original source in Typescript. I ended up with an arena combat engine to train a game bot, while also pitting instances of Fable against itself in combat in a game that it made. This is Fable telling the story of this process. My first instinct was to start typing. I…from soldat.bobbby.online
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