Depends. Different genres and types of games. Persona games take 5-6 hours to get going. A shmup maybe I should know after stage 1 or 2. Open-world games take longer. I gave Dragon's DOgma 2 10 hours before deciding it's a letdown of a sequel. I feel it should be around the point the game lets you know what it is that I can make a call. Xenoblade X tho you don't get the mech until 20 hours in. Every game is different.