Please recommend some fun stand-alone games, such as Plants vs Zombies, Zuma. My parents like to play these little games for my parents.

A series of dream trips to solve puzzles, very good and interesting. Fungus world is a quiet game, machinarium is a puzzle game. Sticky World is very interesting. My Princess Kingdom II. A series of "Crazy Hot Springs 2" and "Beauty Restaurant" simulating business. The Harry Potter series is also quite interesting. Neighbors from hell 1, 2 are all very interesting. Insaniquarium. Most of the games here are foreign games. Just download the Chinese version. It's all fun. Recently pointed to the single-player game.