1.How can I play Brawl Stars on PC?
Just download and install the latest MEmu on www.memuplay.com. Or just check this post.
2.How to use smart Keymapping in Brawl Stars?
Check this video —
3.How to solve “Smart Keymapping not working” issue
Sometimes, especially when a new version of Brawl Stars is released, MEmu smart Keymapping does not work properly. That is because we need some time to update the Smart Keymapping. Normally, it will take a few hours. So if you come across this issue, please be patient and MEmu Team will fix the keymapping as soon as possible.