While upgrading individual unit cards is the primary focus of combat, managing your overarching account level is equally critical.
This guide will detail the most effective methods for leveling up your towers and securing that crucial hitpoint advantage.

The Primary Source: Upgrading Cards
The vast majority of your account experience will come from the simple act of upgrading your cards.
Conversely, upgrading a card to the absolute maximum level costs massive amounts of gold for a relatively small XP return.
- Your deck is your sword.
- If you have excess gold, upgrade your level 1 cards to level 6.
- Balance is required.
The Secondary Source: Clan Donations
The second most consistent way to generate base experience is by actively donating cards to your clanmates.
This is why joining an active clan of fifty people who constantly request cards is absolutely mandatory for free-to-play users.
| XP Method | Value |
|---|---|
| Upgrading Low-Level Cards (Lv 1-5) | Incredibly high efficiency; the absolute best way to gain quick XP if you have a slight gold surplus |
| Endgame Upgrades | Extremely low efficiency; costs 100,000 gold for a tiny XP bump, but mandatory for competitive viability |
Why Tower Health Matters
In close matches, the winner is often decided by a tower surviving with less than fifty hitpoints.
A higher level tower might kill a goblin in two shots instead of three, preventing thousands of points of chip damage over a match.
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