How can I say "Available in Chinese" about a product
In your case, 支持中文 (literally &quot;supports Chinese) is the most idiomatic way afaik. (I read Chinese game websites every day.)  有中文 (literally &quot;has Chinese) is another casual way. Unlike the other answer states, you need to use a verb here in Chinese. (Actually it is English that does not use a verb here: English uses the adjective &quot;available&quot;)
中文版本, or 中文版, means &quot;Chinese version&quot;. If you have a link that points to the Chinese version, you can use the phrase as the link text.