Gem Tower Defense

Welcome to the JavaScript version of Gem Tower Defense, rebuilt to preserve the original game now that Adobe Flash is gone.

Please report bugs to gemtowerdefense@gmail.com.

Register & Login for seasonal saving and to link submitted scores to your account (Classic remains playable without login) — Register / Login

Rotate your device to landscape to play Gem Tower Defense.

Season 2 Choose your start

Level: 1
Lives: 10
Gold: 10
Ticks: 0
Score: 0
Path: —

Special Gem Recipes

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Slate Recipes

Base slates require both listed gems from the same five-gem placement round.

Slate	Recipe
Hold	Normal Topaz + Flawed Amethyst or Flawed Sapphire
Air	Normal Amethyst + Flawed Emerald or Flawed Opal or Flawed Ruby
Opal Vein	Normal Opal + Flawed Ruby or Flawed Topaz
Slow	Normal Sapphire + Flawed Aquamarine or Flawed Diamond or Flawed Emerald
Spell	Normal Aquamarine + Flawed Amethyst or Flawed Diamond
Poison	Normal Emerald + Flawed Aquamarine or Flawed Opal or Flawed Topaz
Damage	Normal Diamond + Flawed Opal or Flawed Sapphire
Range	Normal Ruby + Flawed Amethyst or Flawed Ruby or Flawed Topaz

Combination Slates

Combine the two completed base slates shown, or make both base recipes directly in one placement round.

Ancient	Hold + Air
Wraith	Opal Vein + Slow
Elder	Spell + Poison
Viper	Damage + Range

Advanced Tower Fusion

Both completed towers must already be on the board. Select either ingredient and use Combine Special.

Sapphire Knight	Silver Knight + Great Sapphire
Diamond Trapper	Great Pink Diamond + Great Diamond
Miasma Emerald	Enchanted Emerald + Great Emerald

View complete Season 2 slate and advanced-fusion rules