Star

Star turns plain English prompts and visual references into fully playable browser games in minutes. While regular AI coding assistants spit out raw code snippets you still have to compile and host yourself, Star builds the game and deploys the whole setup right away: cloud servers, touch and gamepad controls, leaderboards, and shareable links.

Like Tesana, this isn't about rendering mockup gameplay videos—the platform compiles actual interactive web games. You can start with a rough idea like an arcade shooter, a 2D platformer, or a survival roguelike, and tune the mechanics conversationally in chat.

Here is what stands out under the hood:

• Iterative prompt-to-game development: Cook up game logic and visuals from text prompts, drop in reference images, and use follow-up prompts to tweak mechanics, enemy AI, and level balance.
• Multi-model backend: Route tasks across model families from OpenAI, Anthropic Claude, Grok, and DeepSeek. Lighter models take care of quick parameter tweaks for cheap, while heavyweight reasoning models tackle complex game systems and sprawling codebases.
• Instant multiplayer and leaderboards: Spinning up online rooms takes a single prompt. Matches run on dedicated servers and stay online even if the host closes their browser tab—no netcode or database config required.
• Built-in Studio and asset creation: Generate 2D sprites, low-poly 3D models with colliders, sound effects, and character voices without leaving the workspace. You can also pull and remix assets across your own projects.
• Real-time physics sliders: Dial in gravity, jump height, movement speed, and spawn rates live without burning credits or typing prompts.
• Autonomous playtesting and telemetry: Built-in AI agents playtest builds to catch broken collisions and sudden difficulty spikes. In-chat telemetry commands show player death hotspots and progression bottlenecks.
• Developer tooling and exports: Prototypers can push games to itch.io, download standalone Windows desktop packages, inspect source code, or plug into AI coding workflows using the Star SDK in JavaScript and TypeScript.

A few caveats to keep in mind: the free tier gives you just 27 initial credits on budget models, unbranded exports and standalone desktop builds require higher tiers, and multiplayer is still in public beta, so expect occasional sync quirks.