Talk:Energy/@comment-2601:89:C602:2B3E:9CCE:9072:5FF4:C29D-20180206025649/@comment-33795501-20180207052935

Exploring a high level location is not the best source of getting the keys for Event locations. For example, I explored Angela's Park, at rank 5 (though the location rank does not affect the keys it gives)

At 97 energy, it gave 16 keys.

Exploring the Organ Room, for 55 energy rewarded gave 10 keys.

It is a similar rate, but playing a lower level location will allow for more time to be spent playing, more searches (which also means more items and collections [which means more energy] regardless) and more keys for the Event Location to be played. I'd reccommend gathering lots of keys for a short time before playing the event location rather than only playing there and a high level location. I'd reccommend doing quests that involve lower level locations (if you haven't already) to pass more time, and get more items.

In addition, avoid Werewolves' Lair, Tomb of the Knight and the Sewers as their base rewards are halved.