A level ten player facing a level twelve player starts the match at a massive mathematical disadvantage before a single card is even played.

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.
Never compromise your primary win condition just for base XP.It is the most efficient conversion rate.Do not upgrade useless cards to high levels just for XP. XP Through Generosity
Many players are stingy, refusing to donate cards because they want to hoard everything for themselves.

This is why joining an active clan of fifty people who constantly request cards is absolutely mandatory for free-to-play users.
Experience SourceEfficiencyEarly UpgradesIncredibly high efficiency; the absolute best way to gain quick XP if you have a slight gold surplusUpgrading High-Level Cards (Lv 12-14)Extremely low efficiency; costs 100,000 gold for a tiny XP bump, but mandatory for competitive viability The Impact of King Levels
In close matches, the winner is often decided by a tower surviving with less than fifty hitpoints.

Never neglect your base progression; it is the silent protector that wins games.

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