What do you think should be the approx. game length of action, adventure, action-adventure, and/or rpg games? To me, Action should be about 15 hours, Adventure, 40 hours, Action-Adventure 15-30 hours, and RPG should be about 30-60 hours long. This is including the time that it should take to complete it with PERFECTION, such as every secret unlocked, every item found, every stage beaten, and so on. You know what I mean.