CryptoKitties
Breed and collect adorable creatures using Ethereum
OpenSea
Discover NFTs, track the latest drops and follow collections
Updated February 2026
| CryptoKitties | OpenSea | |
|---|---|---|
| Rating | 5.0★ | 4.7★ |
| Reviews | 2 | 6 |
| Pros | 0 | 9 |
| FactScore™ | 23.9 | 39.5 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in CryptoKitties — Pros
No unique pros listedBoth tools — Pros
—Only in OpenSea — Pros
User experience Search and filtering system Easy NFT purchase Largest NFT marketplace Blue check mark verification MetaMask integration Multi-chain support NFT analytics Pro featureOnly in CryptoKitties — Cons
—Both tools — Cons
—Only in OpenSea — Cons
Confusing error messages High fees Regulatory scrutiny Stolen NFTsDetails
| CryptoKitties | OpenSea | |
|---|---|---|
| Categories | NFT marketplaces, Crypto tools, Games | NFT marketplaces, Crypto tools, Marketplace sites |
| Platforms | Web | Web · iOS · Android |
| Became Popular | November 29, 2017 | February 13, 2018 |
| Website | cryptokitties.co | opensea.io |
Who Should Pick Which?
Choose CryptoKitties if...
- No unique pros listed
Choose OpenSea if...
- User experience
- Search and filtering system
- Easy NFT purchase
With a FactScore™ of 23.9 vs 39.5, OpenSea leads in community reception. CryptoKitties uniquely offers No unique pros listed, while OpenSea stands out for User experience and Search and filtering system.
What Users Say
CryptoKitties
I’ve always enjoyed this idea of yours, and throughout my blockchain courses, I’ve often referenced this game as a beautifully creative way to generate value. I’ve also used the "genome" model in y...
I use this when I was entering the NFT market. Bought some for fun, not a good ROI, unfortunately.
OpenSea
OpenSea's search engine and NFT analytics makes using the platform easy and painless. From linking my MetaMask to buying NFTs, everything was a one-click and done process. My only complaint is that...
It’s the go-to platform for NFTs, and the Polygon integration made it easy to distribute our Joey Giveaway NFTs to early backers.
I've used OpenSea for almost all of my NFT purchases. Overall my experience has been positive. However, the User Interface has been confusing when delivering error messages (such as just saying "tr...
Related Comparisons
Frequently Asked Questions
Which is better, CryptoKitties or OpenSea?
Based on FactScore™, OpenSea leads with a score of 39.5 vs 23.9. OpenSea has a higher rating of 4.7★ compared to 5.0★.
What are the pros of CryptoKitties compared to OpenSea?
CryptoKitties uniquely offers: No unique pros listed.
What are the pros of OpenSea compared to CryptoKitties?
OpenSea uniquely offers: User experience, Search and filtering system, Easy NFT purchase, Largest NFT marketplace, Blue check mark verification.
Is CryptoKitties better rated than OpenSea?
CryptoKitties is rated 5.0★ from 2 reviews. OpenSea is rated 4.7★ from 6 reviews.
What is the FactScore™ of CryptoKitties and OpenSea?
FactScore™ weighs rating and review volume together. CryptoKitties scores 23.9 and OpenSea scores 39.5.
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