Talk:Booster List/@comment-43960821-20191004044002/@comment-27104423-20191004070935

Yes, you can have multiple boosters going at the same time, and it costs more and more diamonds to activate (2 diamonds for the 2nd booster, 4 diamonds to activate the 3rd, etc. However, you cannot activate exactly the same boosters at the same time. For example, you cannot activate two boosters to shorten Tom's nap, but you can activate a booster to hire Tom for free as well as a booster to shorten his nap.