Re: "so anyone who puts time into them can finish them but they take 40 hours"
Save states let save exactly what is going on at a certain point and restart right there. Like say you have 17 out of 20 health and 23 arrows and you're in the middle of a boss fight where the boss had 10 health left. You save and you can go back to that exact state, down to those stats and your exact position on the screen. So you can do same jump over and over until you succeed, ect.