Quick verdict
Brawl Stars and PUBG MOBILE both sit at the top of the Action game charts on Google Play, but they take very different approaches to the same job.
Brawl Stars, built by Supercell, focuses on 3v3 multiplayer brawler with 70+ characters and varied modes. PUBG MOBILE from Level Infinite instead leans into 100-player battle royale with realistic gunplay and vehicles. The two products are similar enough that comparing them feature-by-feature, rather than spec-by-spec, gives you a clearer answer.
This guide breaks down what each game does best, the use-cases each was designed for, a clean pros & cons matrix, and three high-intent FAQs people search before downloading. Both are free to install from the Play Store, so the real cost is your attention and habit — pick the one whose workflow matches yours.