and fire.every round giving out you 10 picks, and for every pick you get some prize. it is possible to get collect word and the bonus game will be finished. but if you advance till last vault, you will get nice prizes.
i have not many experience with this slot, i did not play it often, but at least i had one bonus game, in which won almost 200 x total bet, so in bonus game this slot can pay nice money. i have no bad runs on this slot, but once again i play it only few time. even low amount of playtime, i like this slot, specially bonus game. 