Some Japanese kids have been going bananas on mobile phone games, racking up insane bills by virtual crap.

The country's six major social game operators decided this week to limit the amount players under 18 can spend to ¥10,000 (US$124). Players under 15 will be capped at ¥5,000 ($62).

Even with these spending caps, this can add up real quick.

Social game giants to set monthly Y10,000 cap on teen spending [Japan Today]

(Top photo: Supri Suharjoto | ShutterStock)