Claude Opus 5 generates playable browser games from a single prompt

In recent days, users have created a first-person shooter, a submarine game, a kart racer, and a Minecraft clone from single prompts. The model writes all code for geometry, textures, physics, and even music, rendering directly in the browser without external files. Examples include Matt Shumer's 'Claude-of-Duty' shooter, Alex Ermolov's snowboard demo, chetaslua's ballista siege engine, and a windy grass field demo. Community comparisons show that Opus 5 dramatically outperforms the previous Claude 4 Opus, and in informal tests it handles physics and complex mechanics better than competing models like GPT-5.6 Sol and Kimi K3. A notable Minecraft clone with infinite procedural worlds and 15 biomes cost 25 million tokens. These prompts serve as informal tests, but are not standardized benchmarks.