A casual single player maze-based tower defense game. Build the best maze and discover the strongest towers, if you can.
We are not affiliated with IsThereAnyDeal.







Gemstone Defense is a single player tower defense game where players can construct mazes that enemies will have to navigate in order to reach key checkpoints before they can proceed to the next area. Each wave, players will place gems to form their maze and select one tower (gem) to keep. The remaining gems are converted to mazing rocks which enemies will have to navigate around. Players can upgrade gem quality, build special gems and discover the best mazes and secret towers. Can you make it to the end?
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.







Gemstone Defense is a single player tower defense game where players can construct mazes that enemies will have to navigate in order to reach key checkpoints before they can proceed to the next area. Each wave, players will place gems to form their maze and select one tower (gem) to keep. The remaining gems are converted to mazing rocks which enemies will have to navigate around. Players can upgrade gem quality, build special gems and discover the best mazes and secret towers. Can you make it to the end?
A casual single player maze-based tower defense game. Build the best maze and discover the strongest towers, if you can.
We are not affiliated with IsThereAnyDeal.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.