Black Hole Playground

Explore black holes, neutron stars, and pulsars in an interactive, cinematic universe. Black Hole Playground brings Gargantua, TON 618, M87*, RX J1856.5–3754, Vela Pulsar, and GW150914 to life. Discover turbulent accretion disks, gravitational lensing, glowing neutron stars, sweeping pulsar beams, and orbiting black holes. • Customize accretion disks, stars, background clouds, and animation live in Playground. • Save, share, and import complete Playground configurations as JSON files. • Explore with orbit, pan, zoom, reset, and freeze-animation controls. • Choose Performance, High, or Ultra quality and a 30 or 60 FPS target. • Listen to Vela’s simulated pulses and GW150914 gravitational-wave audio. • Hide the controls with the eye button for an unobstructed view. • Capture clean screenshots without the interface. • Native Metal rendering on Mac, iPhone, and iPad. Buy once and enjoy on your compatible Apple devices. No account, ads, subscriptions, or in-app purchases. An artistic visualization inspired by astrophysics. Motion, scale, and visual effects are illustrative, not a precision scientific simulation.