I was wondering if you, native speaker, can understand clearly all the dialogues in games like GTA San Andreas, or any other (with all that idioms and accents), movies like Interstellar, etc. Thanks in advance. とはどういう意味ですか?

質問を翻訳

Generally, yes, I can understand all of that. Accents are usually understandable if they are not too thick (personally I occasionally have issues with Scottish accents). If I am not familiar with an idiom (which isn’t likely), then the context of the situation helps with understand the idiom.