The way the application works on the surface is quite straightforward. Then the algorithm looks for cranes and detects every single pixel of the object. Finally, another algorithm – similar to the ones used in photo editors like Photoshop – replaces those pixels with new ones. Eventually the user gets a beautiful picture without unwanted cranes.
PUBG is an automatic environment (actually, a battleground) where several alrogithms fight in the real time. Each algorithm controls a creature (which can be bull, rhino, slug etc.) with an aim to grab bullets and hurt other creatures with it. By killing enemies your creature increases it's IQ, the smartest creatures lists in the leaderboard.