GPT Astra recreates Terraria in one file, builds custom C++ engine games
i_dg23 · x · 2026-09-01
Developers showcased the code generation capabilities of the pre-release GPT Astra. In a single turn, the model recreated the game Terraria in one HTML file, including multiple bosses and a transition to hard mode. Additionally, it built Kaiju and zombie games using a custom C++20 engine and Vulkan renderer without off-the-shelf assets, featuring fully simulated crowds with reactive smoke/fire and rendering thousands of zombies on-screen.
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