Fun in the Sun pack gives normal, training and research speed ups along with some monster chests and war prep chests.
Monster chests can be used for making war gear in the game. War prep chests drop resources.
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Fun in the Sun Expanded Pack

Fun in the Sun Pack Full Rotation
This pack is only available in $1 value and can be bought just once per rotation.
Is Fun in the Sun pack worth buying?
Rating : 2/5
Fun in the Sun pack gives 20 x 60m Speed Ups, 20 X 60m Speed Up Research and 20 x 60m Speed Up Training. It also gives 20 monster chests each for Wyrm chest and Terror chest along with 10 War Prep chests.
The pack doesn’t have any useful items, even though it’s priced very low at $1.
Before you Go
Let us know if you think this pack is useful in the comments below.