this is accounts erased after a period of time
reasons:
1. it would control inflation
2.old players would start again and wouldn't get bored of the game
3.would make lvl of diff players similar
4.it would free space in servers hard drive (at least a small bit

5.if old people die it gives a realistic touch to the game
6.an extra feature is always fun

it could happen in the following ways:
1. if you get killed lots and lots of times
2.after playing for a long period
3.more suggestions??
