You mean the game time? The old predemo with 60 rooms and 1 bossfight took about 40 minutes of pure speedrunning without taking extra item or finding any secret. Going the straight way. The full game will have about 200 rooms and about 6-7 Boss fights. So its really hard to say what it will take in the end. So it depends if you play 100% or just speedrunning it.
grillstern
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