Universal Tower Defense Upgrade Cost Calculator
Calculate the total coins and gems needed to max out your units
Higher rarities cost more to upgrade
Maximum level is 50
Quick Reference:
• Every 10 levels requires gems
• Cost increases by 10% per level
• Secret units cost 50% more
• Level 50 unlocks max potential
Upgrade Priority Guide:
1. Max your main DPS unit first (Jinoo, Dragon Guy, or Berserker)
2. Level your support units to 30-40 for key buffs
3. Keep farm units at level 20-30 (they don't need max level)
4. Upgrade flex/situational units last
Pro Tip: Focus resources on units with good traits first. Ruler/Eternal traits are worth the investment! Etherealize duplicate units instead of selling them - each star provides unique buffs. Allocate Stat Points: cooldown for DPS units, range for buff units like Miku.
Resource Farming Guide
• Complete Story Mode stages
• Farm Infinite Mode (scales with waves)
• Use farm units for +50% bonus
• Daily quests give 5,000-10,000 coins
• Redeem active codes (100-500 gems)
• Complete daily/weekly quests
• First-time Story Mode clears
• Special events and login rewards
• Don't spread resources too thin
• Max 2-3 main DPS units first
• Save gems for guaranteed banners
• Plan upgrades before spending