The keywords "pacman google," "pacman halloween," and "google pacman halloween" are currently trending because Google has released a special, playable Halloween-themed Pac-Man game as its interactive Google Doodle.

Google frequently creates these interactive Doodles to celebrate important events, holidays, and anniversaries. In this instance, the Doodle commemorates Pac-Man's 45th anniversary and coincides with Halloween. Users can play the classic arcade game directly on the Google homepage, but with a spooky twist: Pac-Man wears a witch's hat, and the game features eight special Halloween-themed mazes.

This interactive game has generated significant interest, causing people to search for terms related to "Pac-Man" and "Google" in the context of "Halloween" to find and play the game. The trend is a result of Google's celebratory and engaging tribute to the iconic video game, encouraging widespread participation and searches.