Persistent 4D worlds
anchored in reality.

MierCat World fuses centimetre-accurate RTK/LiDAR SLAM point clouds, calibrated multi-view photography (photo.mier.cat), and geospatial trajectories (travel.mier.cat) into real-time WebGPU 3D Gaussian Splatting and navigable digital memory spaces.

SENTINEL ON WATCH · NIGHT Compiling the first lived-in 4D Gaussian scenes. Interactive preview is live on mier.cat.