Playground
The Playground is where you build and test in HPP Hub. Describe what you want in plain language, and HPP Hub generates it, builds it, and shows you a live preview.
Build an app or game
- From Home, choose what to make — App, 2D Game, 3D Game, or Web3 dApp — or just start typing in the Playground.
- Describe what you want (e.g. "a habit tracker with daily check-ins and streaks"), or pick one of the guided prompts on Home if you're not sure where to start.
- HPP Hub builds it and opens a live preview you can interact with.
- Keep refining by chatting — ask for changes and the preview updates.
- When it's ready, publish to share it.
Your projects save automatically — continue from Home or the project list.
Note: Web3 dApp is currently in internal testing and may not be available on the production Hub yet.
Chat with AI models
The Playground is also a chat with AI models provided through HPP Router. Pick a model from the selector at the top:
- Claude Sonnet 4.6 — latest Claude Sonnet, excellent coder
- Claude Haiku 4.5 — fast and efficient
- GPT-5.2 — latest OpenAI flagship
- GPT-5 Mini — lightweight but intelligent
- GPT-OSS 120B — open-source model
…and more. See the full list and pricing in Wallets.
Verify a response on-chain
Every response in the Playground is fingerprinted and recorded on the HPP chain. Use Verify on a message to confirm the response hasn't been altered since it was created — don't trust, verify. Only the fingerprint is stored on-chain, so your prompts and responses stay private.
What it costs
Building and chatting use Credits. See Wallets to check your balance and top up.