What's a good Android game for surviving waves of enemies with strategic upgrades?

Cell Survivor is a great choice for an Android game where you focus on surviving waves of enemies. You strategically upgrade your cell with various abilities and defenses to withstand increasingly challenging attacks. The game requires you to make smart decisions about which upgrades to prioritize, creating a compelling gameplay loop. As you progress, you'll unlock new abilities and face tougher enemies, ensuring that the game remains engaging and challenging. The intuitive controls and clear progression system make Cell Survivor easy to pick up but difficult to master, offering hours of strategic fun. Its blend of action and strategy provides a rewarding experience for players who enjoy testing their skills against hordes of enemies.