How We Made SPACE INVADERS: World Defense, an AR game powered by ARCore- Google Developers Blog

This post details the development of SPACE INVADERS: World Defense, highlighting the use of ARCore's Geospatial API, Streetscape Geometry API, and Geospatial Creator. It explains how the Geospatial API uses VPS and Street View data for world-anchored experiences, including accuracy checks with JavaScript code snippets. The Streetscape Geometry API is used to algorithmically vary gameplay based on real-world topography and city layouts. The 'Invader's Dimension' feature is explained, including the use of depth images and an A* search algorithm for generating spaceship pathways, with post-processing for smoothing and collision avoidance. Geospatial Creator and Photorealistic 3D Tiles were used for visualizing virtual content in specific locations. Updates like Indoor Mode and score rebalancing are also mentioned.