Hi Product Hunt! I'm Kevin, the maker of KINBOUND.
I started with a small, two-battle spirit-card prototype. Using GPT-6 Astra through Codex, I expanded it into a browser adventure with three chapters, 18 stages, 30 collectible spirits and 90 forms.
The core idea: see the enemy's next move, then build your answer. Bring a team of three, manage energy, play tactic cards and switch your front line. Each spirit has two evolution branches with different strengths and tradeoffs.
You can play free now, with no account required: Play the KINBOUND campaign
Build a team of three spirits and explore an 18-stage campaign across three chapters. Collect 30 companions with 90 forms, choose branching evolutions, and plan around revealed enemy moves. Play tactic cards, manage energy, and switch your front line. Free to play in your browser, with English and Chinese, local autosaves, and invite-link battles with a friend.
