Aliens vs Zombies: Invasion Progression Guide: Saucer Levels and Cannon Upgrades

Aliens vs Zombies: Invasion combines tower defense with flying saucer progression. The saucer consumes objects, collects resources, and gains experience. Resources are then used to construct and upgrade cannons that protect the base from enemy waves.

Level up the flying saucer

Objects consumed by the saucer grant experience points. These points can be used to level up and improve its abilities. Pay attention to objects that fit within the saucer’s current size.

Collect resources for cannons

Consumed objects may drop valuable resources. These materials are used to construct and upgrade defensive cannons. Resource collection therefore supports both saucer development and base defense.

Balance saucer and base development

Do not focus only on collecting objects. The base must also survive zombie waves. Review your available materials and decide whether your next improvement should support the saucer or the defensive structure.

FAQ

How does the saucer gain experience?

Consuming objects grants experience points.

What are resources used for?

They are used to construct and upgrade cannons.

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