Correct

入魔

/ rù mó / 
Strokes

Example

As a Verb

be infatuated/spellbound; be absolutely addicted

1
Tā
他
duì
对
diànnǎo
电脑
yóuxì
游戏
rù
入
le
了
mó
魔
  
。

He has an infatuation for computer games.

2
Tā
他
dǔbó
赌博
rù
入
le
了
mó
魔
  
。

He is infatuated with gambling.