expression, godan verb (-ru)
become a habit; be addictive; be moreish
Describes something that you can't stop doing or eating because it's so enjoyable or compelling. Often used for tasty snacks, games, or behaviors.
このポテトチップスは癖になる味だ。
These potato chips have an addictive flavor.
スマホゲームが癖になって、夜
I've gotten hooked on smartphone games and end up staying up late.