Those were the days though. No memory cards and hardly any choice meant you got to know the games you had intimately. Also going around a friends house to play a game or games that you didn't own or to play consoles you didn't own was an event. I used to love going to one huys house to play r-type and another kids house to play mario. Nowadays people are spoiled and probably don't have anything close to what the experience was for us.
I had a master system with built in Alex the Kidd, I also had sonic, micky mouse Castle of illusion, enduro racer, the ninja, speedball and a spy game I can't remember the title of where you had a car that would change into a boat and a plane. I only beat sonic and Alex the kidd so the others had loads of replay value. I did get the ghost busters game but swapped that for one of the last commodore 64s with a floppy disc drive and a load of games. I don't think I ever looked at my collection and didn't know what to play ever.