This is a pretty small issue and is not really a bug, however this is the category for Web issues so here we go.
The translation of “Slow Game” in the portuguese translation is incorrect. Instead, it displays “Desacelerar jogo”, which translated to english properly, means “Desacelerate game”.
The correct translation for “Slow Game” would be “Jogo Lento”, and not the current translation.
This is an issue with the translation which means it is not affected by the browser, OS or device.