aisandboxgame

AI Sandbox Game is a local-first, browser-based text RPG framework driven by large language models. It does not bundle AI models or private service access; users connect their own OpenAI-compatible provider such as OpenAI, Anthropic, DeepSeek, Google Gemini, xAI, or SiliconFlow. The app is plain HTML/CSS/JavaScript with no build step, runs from a static file server, and is installable as a PWA for offline use. Core play systems include streaming reasoning-driven narration, living NPCs with cognitive and relationship state, a d20 skill-check engine, persistent saves, inventory and status panels, character dossiers, hex-map navigation, an in-game phone with SMS, slash-command player actions, and selectable visual themes. A design mode interviews the user to generate a playable world card from a natural-language description. Bundled example worlds include a fantasy setting, a cyberpunk noir, and an Eastern cultivation universe. The framework code is AGPL-3.0 licensed, while bundled prompt assets under the prompts directory are licensed separately under CC BY-NC-SA 4.0.