Is PixiJS a good choice for a browser game?

Reach for it when the answer to how many sprites is a lot. It is a renderer rather than an engine, so the game logic is still yours to write, which is the point.

How do you know these games were built with PixiJS?

Makers pick their tools from a list when they submit, and that is what this page filters on. It is self-reported and nobody audits it, so treat it as a credit rather than a certificate. Where a game links its source, you can go and look.

Do I need PixiJS to play these games?

No. PixiJS is what the maker built with; the game ships as a page you open in a browser. Nothing on this list needs a plugin, a launcher or a download.

Where should I start if I want to build with PixiJS?

Open the source link on any game here that has one, then read the official documentation at pixijs.com. Reading one finished small game teaches more than a tutorial series, and a good number of makers on this site publish their repositories.

What kind of games do people make with PixiJS?

Across the 20 games on this page, the most common categories are rpg, strategy and action. That is what makers actually shipped, counted from the listings themselves rather than estimated.