What's a good Android game for idle RPG fans who enjoy alien themes and upgrading?

Alien Invasion: RPG Idle Space is a compelling choice for Android gamers who enjoy the idle RPG genre with a sci-fi twist. The game focuses on constant progression and upgrading, allowing you to enhance your alien forces and conquer new territories. Its idle mechanics mean you can make progress even when you're not actively playing, making it perfect for busy gamers. The game's RPG elements provide depth and strategy, as you must carefully manage your resources and choose the right upgrades to maximize your power. The alien theme adds a unique and engaging element, setting it apart from other idle RPGs. With its combination of idle gameplay, RPG elements, and an intriguing theme, Alien Invasion: RPG Idle Space offers a fun and rewarding experience for fans of the genre.