In Alien Invasion, players manage resources, battle alien enemies, and upgrade their spaceship and crew. The game features idle mechanics, allowing progress even when not actively playing, while strategic decisions impact overall success.

Upgrading your spaceship and crew requires collecting resources and using them in the upgrade menu. Players can gather materials through battles and missions to increase their ship's capabilities and enhance crew skills.

To defeat tough enemies, focus on upgrading your ship's weapons and armor first. Additionally, equip your crew with the best gear and utilize their skills effectively during battles for maximum impact.

To maximize resource collection, prioritize upgrading resource-collecting crew members and enhancing your ship's efficiency. Engage in battles and complete missions regularly to boost resource gains and invest them wisely for upgrades.

Creating a powerful strategy involves several key steps: 1. Assess your current resources and fleet. 2. Identify which crew members excel in combat or resource collection. 3. Focus on upgrading your best-performing crew first. 4. Tailor your battles based on enemy weaknesses and your crew's strengths.