Build a defense that survives the first ten waves

1. Fill useful positions before chasing a perfect merge

An empty lane deals no damage. Summon enough turrets to cover the board before repeatedly spending coins in search of one color. A mixed level-one defense is safer than a single strong turret with open routes.

2. Merge identical turrets, then reposition

Select a turret and choose an identical unit to combine them. Higher-level turrets gain a large power increase, but their position still matters. Move the evolved unit into a cell that completes a useful link instead of leaving it where the merge happened.

3. Use each energy color for its real job

• Red links increase damage and help remove armored enemies.
• Blue links slow the invasion and buy every turret more firing time.
• Gold links generate extra coins and improve the next build phase.

Early on, one blue link plus reliable damage is usually safer than an all-gold economy. Add gold when the current wave is already under control.

4. Keep an emergency coin reserve

Do not spend every coin immediately. A small reserve lets you summon after a weak merge result or adapt when runners, shields, regeneration, or a boss changes the next wave's priority.

5. Treat every defeat as permanent progress

Runs unlock research, achievements, and better knowledge of the handcrafted wave patterns. The best short-term target is not wave 30—it is beating your previous best while completing today's challenge.