noun
mobile game; cell phone game
Refers to games designed for or played on a mobile phone, including both feature phone and smartphone titles.
通勤中に携帯電話ゲームで暇をつぶす。
I kill time with a mobile game during my commute.
More specific to smartphone games, while 携帯電話ゲーム can include older feature phone games.
Compound of 携帯電話 (mobile phone) and ゲーム (game).