Board Thread:Questions and Answers/@comment-31103556-20170316155636/@comment-24659969-20170316182257

Treasures are used to increase certain parts in your game status; Ranging from making your units stronger or certain enemy types weaker, increase your money production, making your base HP and cannon stronger, increase your maximum battle stamina or increase amount of upgrade XP obtained after battle.

The amount of effects are big and can be battle-deciding a lot of times. Eg: The anti-alien treasure cuts off all alien attack and health by 30%; You gain a total of 60% extra power literally.

The treasure effect from each chapter are carried thru WHOLE game. So it is very recommended to obtain all gold treasure in story progress.