What's the best free Android game for offline sniper action, challenging missions, and upgrading weapons to become a top shooter?

Sniper 3D：Gun Shooting Games is a solid choice for those seeking offline sniper action on their Android devices. The game offers a variety of missions that test your sniping skills, from eliminating targets to rescuing hostages. A key element of the gameplay is the ability to upgrade your sniper rifles and other weapons, enhancing their power, accuracy, and range. This allows you to tackle increasingly difficult challenges as you progress. The game provides an engaging experience for sniper enthusiasts who want to hone their skills and climb the ranks to become a top shooter. Sniper 3D also provides events and campaigns, although some users have reported connectivity issues. The game is free to play, which makes it accessible to a wide audience, although in-app purchases are available for those who want to speed up their progress or acquire premium items. It's a good option for sniper lovers looking for an offline experience.