Quadtrees are everywhere spatial data exists. Mapping services use quadtree-like tile pyramids to serve map tiles at different zoom levels (Bing's quadkey system, for example, addresses tiles as base-4 paths). Game engines use them for collision detection and visibility culling. Geographic information systems use spatial indexes to store and query spatial datasets. PostGIS uses GiST indexes (R-tree-style) for spatial queries on geometries, while PostgreSQL's core supports quadtree-like SP-GiST indexes for certain data types like points.
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Slime Rancher 2 just hit consoles last year, after some time in early access. This sequel improves upon everything that made the first game great, which included capturing and farming various slimes. There's a fresh location to explore and an absolute boatload of new slimes to capture. Sucking up dozens of slimes at once is a simple pleasure akin to completing a level in PowerWash Simulator.