Treasure Chest (BTD5 and BTD6)

An update in BTD5 on Jan 19, 2012

There is a Treasure Chest on the main screen of BTD5. The player can click it once a day and it gives him a free Monkey Money every day. Amount of the money varies around $10. The Treasure Chest resets every midnight (0:00 or 12:00 a.m.) (GMT/UTC).