Talk:"Ayakashi Quest"/@comment-25405962-20140928003817/@comment-24182082-20140928044251

Overflow is when your HP is supposed to be replenishing every minute, but it stops on your HP limit.

Example: Your HP is 151. Your HP is full and you used up everything for now, making it 0 HP.

3 hours later (which is 180 HP), you come back, you'll only see 151 HP because that's your HP limit. Therefore you just wasted 29 minutes, and wasted HP is called overflow.