Jstris Companion is a fun chrome extension. it's a free extension , it has 620 active users since released its first version, it earns an average rating of 4.43 from 7 rated user, last update is 1665 days ago.
A simple extension for customising Jstris, this will allow you to change your skin, ghost, background, add a second key binding for all keys, and inject your own CSS/JS!
You could download the latest version crx file or older version files and install it.
English.
100% user give 5-star rating. Read reviews of jstris companion
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Easy to use, many skins
Very great and easy to use. And so much selection