Yes, it is. To translate the script to a new language you need to do just 2 things:
1. Translate system messages in the "language.php" file, its structure looks like this:
"msgFeatured" => "Featured Game",
"msgNoNews" => "There are no news yet",
"msgMore" => "Read more",
2. Translate html files of the visual theme (template)
Please note, there is no need to edit any file from the script's core.