What does "At home?" mean in English for Spanish?

In English for Spanish, "At home?" means:

¿En casa?

Listen to "At home?": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 3, Level 1, Scene 3
• English for Spanish 3, Level 1, Scene 5
• English for Spanish 2, Level 1, Scene 1