Talk:The Ancient Temple of Memories/@comment-6624314-20130502173258/@comment-1321146-20130503062225

Selecting the amount of (silver) keys you want to use only sets a max amount.

It's purely to save time.

The game will keep trying to open the chest, spending 1 key at a time, up to the amount you set, but no more than turns out to be necessary. And you only get one animation.

So in the time it takes to make one try, using 1 key, you could instead select 10 keys as a max amount, and 4 will actually be spent, saving you the time of going through 3 animations.