Power Stones are one of the premium currencies in The Tower: Idle Tower Defense, and they sit at the centre of the Ultimate Weapon system. If you want to unlock or improve Ultimate Weapons, you will need a steady supply of them.
Power Stones
Power Stones are a premium currency spent on buying and upgrading Ultimate Weapons. Because they are harder to come by than standard currencies, it is worth planning your spending carefully rather than upgrading impulsively.
Any purchase of 500 Power Stones or more triggers a confirmation message before it goes through, giving you a chance to back out of large spends.
Acquiring Power Stones
You can earn Power Stones through regular play in several ways. Tournaments award them based on your participation, and you can exchange Medals for them. They also appear in the weekly rewards from Daily Missions and are granted through Milestones.
If you want to buy them directly, Monthly Stone Packs and other promotional offers are available through The Tower Web Store online, or in-game via the Google Play Store and Apple App Store.