Gem Tower Defense 2

Gem Tower Defense 2 is a tower defense game in which you build mazes to slow waves of monsters advancing on your fortress, then use towers and gem combinations to destroy them. The open map gives you room to plan both your maze and your firepower. Waves grow tougher as the invaders gain more health.

Place and combine gems

Each wave gives you five random gems to place. After placing them, you keep one and the others become stones that can form part of your maze. If two of the five gems are identical, you can upgrade a gem by one level; four identical gems let you upgrade one by two levels.

Some gem combinations trigger special synthesis. You can activate it by clicking any gem when the required combination is among the five you just placed, or when the map already contains gems that meet the requirements. After placing, you can also downgrade reserved gems to help make special gems. Pressing the space bar quickly places and reserves gems.

Tower types

The game has five tower types:

• Basic towers: appear each round and come in eight types and six levels.
• Synthesis towers: made only by following a recipe.
• Stone slabs: made only through recipes and can only be placed and synthesized during the current placement.
• Star towers: created by super-synthesizing identical gems after reservation. They reach a maximum of three stars and cannot be used in synthesis.
• Evolution towers: synthesized gems that evolve by spending gold coins, with a highest level and more than one evolution line.