GamePress is translation ready. To translate open default.po (located in languages folder) with Poedit. Translate the file and save in languages folder under name appropriate to your language (i.e. pl_PL for Polish).
More detailed instructions on theme translating can be found in this article.
I’ve done everything and I have the file in Spanish translated and called “ES_es.po” and “ES_es.mo” in the languages folder. How I can activate it? Thanks!!!
Looks like you’ve got your filenames backwards. They should be es_ES.po and es_ES.mo, capital letters last. Failing that, is WPLANG set correctly in your wp-config.php file?
OK Thanks everyone, I change the ES_es.po for es_ES.po and it’s Works. Thanks!!!