What tricks went into making one of the best games ever? YouTube channel Boundary Break has peered behind the scenes of the N64 and the DS versions of Super Mario 64 to show off secret rooms, hidden NPCs, and the inner workings of Peach’s Castle.

Someone re-cut the video for speedrunner Cheese’s world record 120 star time in Super Mario 64 down to only the times Mario says “Yahoo!” It’s just over seven minutes long. Mario says “Yahoo!” a total of 369 times, give or take. I counted.