Talk:Criminal Case Wiki/Questions & Answers/@comment-217.73.175.68-20140520112546/@comment-5364408-20140521015015

technically only the 15 energy happy hour saves energy, but obviously with unlimited boosters (especially 6combo) you can play fewer times due to having higher scores and save some energy, not to mention coins. and even more indirectly, the xp happy hour saves energy because you can level up sooner due to getting double xp for every scene.

for old cases you of course save energy with the 2x fill or 10 energy happy hours as well :)