In 2018, there were no club leagues, no power league, and no masteries. The core loop was Showdown and Gem Grab.
You cannot play on official Supercell servers using a 2018 client. These versions are usually only playable through Private Servers (like ReBrawl or Null's Brawl), which are not official and carry security risks. Brawl Stars Eski Surum Indir 2018
While the official Google Play and App Store only provide the latest updates, some third-party archives host older APK files for Android users. In 2018, there were no club leagues, no