What is Gems?
Gems share the lobby counter with Coins. The Hardcore tower row is priced in Gems: Brawler 1,250, Necromancer 2,250, Accelerator 2,500, Engineer 4,500, and Hacker 5,500, all at level 50. Evolutions add another gem cost on top of 15,000 Coins. Hardcore pays a different reward currency from the other modes. Several expired codes also paid a fixed Gem amount.
Published facts
| Fact | Value |
|---|---|
| Name | Gems |
How do you get Gems?
Hardcore reward currency, quests, and the Credits section of the store. Do not treat a video's gems-per-hour figure as a listed payout.
How do you use Gems?
Buy the five Hardcore towers and pay the gem half of an evolution. Coins do not replace a gem price unless the tower card lists a Robux alternative.
![Gems in [π FALL SKINS] Tower Defense Simulator](https://static.wikia.nocookie.net/tower-defense-sim/images/3/30/Sep3rdWinScreen.png/revision/latest?cb=20260428115749)