Pixel Hop Twins
Two timed platform levels. Every fresh R-peak queues the game's normal buffered jump; keyboard controls remain available.
MIT code · CC0 sprites, audio and levelsOpen bio-signal playground
Turn live Polar H10 signals into altitude, speed, traffic, and perfectly timed moments—on a flat screen or inside WebXR.
OPEN-SOURCE GAME MENU
Open Ground Control in one tab, then launch a game. Fresh selected beats travel over a same-origin data-only channel; raw ECG stays in the acquisition tab.
ONE SIGNAL · TWO MAIN VIEWS
On a compatible phone, Polar acquisition and play stay in one tab. For Quest or iPhone, the relay room is public and unauthenticated. The optional beacon carries derived heart metrics, beat timing, and game commands—but never raw ECG samples or a Polar device identifier.