A tower defense game
https://playapkgame.com/games/ caught my attention, and I spent hours perfecting my strategies. Placing units strategically to fend off waves of enemies required careful planning. The variety of towers and upgrade paths allowed me to experiment with different tactics. As the difficulty increased, I had to think faster and adapt my strategies to counter stronger enemies. The sense of achievement when I successfully defended my base against an overwhelming attack was incredibly satisfying.