てぃうぶいゲームでしょう
TVゲームでしょう
tiubui gēmudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of テレビゲーム

1. Probably a TV game.; It must be a TV game.

Polite
Presumptive
Conjecture
Usually Written in Kana