Adding them all would have led to a delay, director Masuda explains
Nintendo details show floor plans
New gameplay details also revealed, including four-player online raids
Plus new mobile titles including sleep app
15-minute presentation scheduled for June 5
Developer 'trying to create something as exciting as Pokémon'
Online broadcast set for Tuesday June 11, will focus "entirely on software"
Company expects upcoming Switch titles to appeal to 3DS market
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New mainline entries in the RPG series arriving on console in late 2019