Karen Warfare built with Opus 5.5

von Ts Floyd: Claude Code

What got me was the timeline: a browser tab, a single day, one developer, and a working multiplayer shooter came out the other end. Karen Warfare runs on Opus 5.5, opened through Claude Code, where you paste a prompt along with a few screenshots to set the vibe and let the model carry it. The shooter layer gets scaffolded first: you move in first person, rifles hit instantly, reloading is handled, and there's a sniper scope. Then comes the arena, a mall with storefronts, moving escalators, a vending machine, and a room called The Manager's Office. Networking follows too, covering the server side, lobbies that hold 7v7, a running score for each team, and a clock for the match. The comedy is where it really leans in. Kills show up in the feed as "Dismissed Becky +100" or "Curbside Pickup +25," and a voice line plays on every single one. The line that gets me: "I have a 4.9 Uber rating and 400 Facebook friends, so don't test me" Deploy it and you've got something you reach through a URL, a genuine multiplayer game made by talking to a model. It's free at karenwarfare.fun. The full prompt and a step-by-step build sit below the main text, and there's a separate piece on turning Opus 5.5 into a motion studio.