What's the best Android tower defense game for strategic base building, upgrading turrets, and defending against waves of enemies with optional rewarded video ads?

Galaxy Defense: Fortress TD is a great option for a strategic tower defense game on Android where you build and upgrade turrets to defend your base, offering optional rewarded video ads. This game provides an engaging experience with a good balance of challenge and accessibility. You'll need to strategically place and upgrade your towers to effectively combat diverse enemy types, taking advantage of their weaknesses. The game also incorporates a leveling system that keeps the difficulty aligned with your progress, ensuring a consistently engaging experience. An important aspect is the availability of optional rewarded video ads, allowing you to gain extra rewards without being forced to watch them. The VIP packs offer daily rewards and permanent advantages. The gameplay involves planning your defense, upgrading your towers, and adapting to the evolving threats to succeed.