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Claude Sonnet 4.5 Built a Cyberpunk Shooter in 2 Prompts
Testing Claude Sonnet 4.5 against GPT-5 Codex High by having both build a game from scratch. Sonnet 4.5 won on visuals and worked first try — the result is Neon Streets: 2084, playable in the browser.
Claude Sonnet 4.5 just dropped, and my first real test was asking it to build a game from scratch. In 2–3 prompts it threw together a working cyberpunk bullet-hell shooter — power-ups, escalating enemy waves, boss fights, and visuals that genuinely impressed me. Play it below.
WASD to move, mouse to aim, click to shoot. Pick up weapon drops from enemies. Or play it full screen here.
Claude Sonnet 4.5 vs GPT-5 Codex High
I ran the same prompt through GPT-5 Codex High as a comparison. It produced a similar game — enemy waves, basic shooting mechanics — but the visuals weren't close, and it didn't work on the first try. Claude needed no debugging pass.
The gap that stood out most was the art direction. Sonnet 4.5 made deliberate visual choices: neon color palettes, particle effects, procedural audio that fits the cyberpunk aesthetic. GPT-5's output felt functional but flat by comparison.
For game jams, rapid prototyping, or anyone vibe coding a creative project — Sonnet 4.5 is noticeably better at translating a vague creative brief into something that actually looks good.