Low-friction browser games still work because they are easy to open, easy to understand, and easy to revisit during busy days.
Cookie Clicker 2 is a good example of that pattern. It gives players a simple idle progression loop that feels satisfying even in short sessions, so it fits naturally into small breaks without requiring a download or a long setup.
That mix of browser access, steady progression, and low friction is a big reason these games continue to hold attention.