Frequently Asked Questions

Where does the win rate data come from?

All battle and player data comes directly from the official Supercell API — real battles played by real players in the game.

Every hour we process millions of real battles to:

• find the decks players are actually winning with (the current meta)
• count wins and losses for every card and deck

What do "win rate" and "battles" mean?

Win rate is the percentage of battles won out of all battles played — for example, 53% means the deck won 53 of every 100 matches.

Battles is the total number of matches played with that card or deck in the time period you have selected.

We only look at who won the match, not the score — a win counts as a win whether the opponent finished with 0, 1, or 2 crowns.

What do the 24h, 7d and 30d buttons do?

They set the time window for the battle stats on the page — win rate, battles, usage rate, rank and the per-arena breakdown: 24h shows the last day, 7d the last week, and 30d the last month.

Your choice is remembered as you browse, and we default to 30d because it gives the largest, most stable sample.

The trend charts always show the last 30 days, no matter which button is selected.

How recent is the data behind the stats?

We only ever use recent battles that fall inside the window you pick:

• older battles drop out of the window automatically

This keeps the numbers focused on the current meta instead of outdated statistics.

How often are the stats updated?

We pull fresh data from the API and recalculate every deck and card once an hour.

A full refresh of the whole site takes about 10 minutes, so each page shows an "Updated X ago" indicator and a few numbers may shift slightly while an update is running.

What do "usage rate" and "rank" mean on a card?

On a card page you will see a few numbers beyond win rate and battles:

• Usage rate — the share of decks that included this card in the selected period.
• Rank — where the card places by win rate among other cards of the same type (cards are ranked against cards, evolutions against evolutions, and heroes against heroes).
• Per-arena breakdown — the same win rate and battle counts split by arena.

Why do evolutions, heroes and deck variants have their own stats?

Evolved cards, hero cards, and the decks that run them play very differently from the base versions, so we track each one as its own entry with independent win rates and rankings.

That is why the same card can appear more than once — a base card and its evolution each have their own page and numbers.

What is the deck analysis score?

The score out of 10 on a deck page rates the deck's Attack, Defense, Synergy and Versatility based on how its eight cards work together.

It is a structural rating of the card composition — it is not based on battle data, so it does not change when you switch the 24h / 7d / 30d period.

How do decks get onto DeckMelon?

Decks come from popular real-world play picked up through the API. A new deck stays hidden until it has gathered enough battles to show reliable stats.

Once a deck passes 50 battles in the last 30 days it is tagged "current meta", so you can spot the decks players are leaning on right now.

Is a card's win rate the same as a deck's win rate?

No — they measure different things:

• A deck's win rate covers battles played with that exact 8-card deck.
• A card's win rate covers every battle that card appeared in, no matter the other seven cards around it.

So a strong card can still show a modest win rate if it is often used in weaker decks, and a card with a high win rate is not necessarily the reason those battles were won.