4 gigs for 1 hour of gameplay is irrelevant ,should never judge a games mileage based off of a general gameplay length but the content that is provided and the over all package , game length does not = a better end product , i do not think you know how much work it takes to make a 10 hour first person horror game with consistency on a minimum budget without it being full of padded content to bloat the game length duration
https://youtu.be/7KTF5W2w0Ig
4 GBs for a 1 hour length game
this amateur devs making this lazy horror games should at least do it around 10 hours to finish