Executive Summary
Is Clash Royale’s Matchmaking Rigged?
The short answer: No. The data shows no evidence that the matchmaking system deliberately pairs you with decks that counter yours under any circumstance.
How I Checked
I analyzed 1 million real matches from the Clash Royale API to see if opponents’ cards were influenced by your deck.
Here’s what I did:
- Scraped the data - I pulled 1 million match records from the official Clash Royale API
- Compared distributions - I looked at how often each card appeared against you vs. how often it appears overall
- Measured the difference - I used statistical testing to see if there was a meaningful gap
What I Found
Mean Absolute Deviation: 0.0377%
This number tells me how much the cards you faced deviated from what you’d expect by random chance. At just 0.1%, it’s extremely small, basically noise.
In practical terms: if a card appears in 5% of all matches, you’ll face it roughly 5% of the time, regardless of your deck.
There’s no hidden algorithm adjusting opponents to hard-counter you.
Do you think I made a mistake?
Feel free to correct me!
The whole code is open source and the analysis is easily replicable. You can open this analysis on Google Colab and run it yourself by pressing the button down below.
References
This project uses several tools and libraries. You can find all of the tools used for the project and the inspiration for this analysis here.