Royal 21 Blackjack

Unknown author · Games

Open in Chrome Web Store

Users

Avg rating

5.0

Ratings

Updated

Jul 26, 2026

Media

2 items

Description

An elegant blackjack table in your side panel — full casino rules, splits, doubles, insurance and a leaderboard. Royal 21 Blackjack brings the excitement of a real casino straight to your browser's side panel. Play authentic blackjack with full casino rules, including splitting pairs, doubling down, insurance bets, and natural blackjacks. Challenge yourself to make the best decisions, climb the leaderboard, and become the ultimate card master. 🎲 Features ♠️ Authentic casino blackjack gameplay 🃏 Split pairs and play multiple hands 💰 Double Down and Insurance options 🏆 Global leaderboard to compete with other players 💾 Automatic game progress saving ⚡ Instant play from Chrome's side panel 🎯 Smooth controls and elegant casino-inspired design 🌙 Lightweight, fast, and works offline Whether you're a beginner learning the basics or an experienced blackjack player looking to sharpen your strategy, Royal 21 Blackjack delivers a polished and immersive card game experience without leaving your browser.

History

30d 90d 1y all

rating_count is the Chrome Web Store ratings count, not a written-review count.

Details & SEO

SEO signals

Listing completeness signals

Title length
Characters in the extension name.
18
Description length
Characters in the listing description.
1009
Media assets
Screenshots and videos on the listing.
2
Has promo video
Whether the listing includes at least one video.
No
Languages
Declared language locales.
5
Developer website
Listing exposes a developer website URL.
No
Contact email
Listing exposes a contact email.
Yes
Keyword in name
Case-insensitive substring match in the name.
—
Keyword in description
Case-insensitive substring match in the description.
—
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
—
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
41.5

These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.

Description

Details & SEO

SEO signals

Listing completeness signals

Title length
Characters in the extension name.
18
Description length
Characters in the listing description.
1009
Media assets
Screenshots and videos on the listing.
2
Has promo video
Whether the listing includes at least one video.
No
Languages
Declared language locales.
5
Developer website
Listing exposes a developer website URL.
No
Contact email
Listing exposes a contact email.
Yes
Keyword in name
Case-insensitive substring match in the name.
—
Keyword in description
Case-insensitive substring match in the description.
—
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
—
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
41.5

These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.