To get gems in Toilet Tower Defense, the main ways are:
- Complete Daily and Weekly Missions, which reward gems. Daily Missions generally give 5 gems each, while Weekly Missions give 20 gems each. These missions usually involve killing enemies or summoning units.
- Trade with other players at the Trading Plaza by exchanging units or items for gems.
- Purchase gems with Robux, including buying VIP rewards or bundles.
- Consistently log in daily for rewards and complete in-game achievements that provide gems.
- Participate in game events and watch advertisements for free gems and units.
Clearing regular stages alone does not grant gems; focusing on missions, trading, and daily activities is key to earning this premium currency.