Ultima VII is a living, breathing world inside of your PC. Way ahead of its time, it was a 32-bit game running in 16-bit DOS using a custom memory manager (Voodoo). Many of its gameplay mechanics are still unmached in RPGs today: a seamless world to explore without loading screens, weather effects, day and night cycle, buying and sailing ships across the ocean, NPC schedules with their own lives, NPCs that go to sleep at night, switch lights on and off, go about their chores, a smith will work the smithy, a clothier will create clothing from cloth, NPCs will mingle in the tavern in the evening, go to church, order food, get served and eat right off the plate. It's a joy to just observe the NPCs going about their lives. There are light survival mechanics like your party requiring food to eat, and in Serpent Isle there is heat and cold to deal with. Most items can be picked up and many are interactable, so you can play all the instruments, open and close all doors, look inside every container, stack containers to build staircases to walk on roofs, load containers on your ships and cart... and you should try using diapers on babies and then use the dirty diapers to scare away enemies. The game allows you to hunt in the wilderness for food, gather reagents for your magic, explore caves and fight the monsters. I spent a chunk of my childhood just inhabiting the game world, ignoring the main quest and just roleplaying as a trader, or hunter in the wilderness, or explorer on my ship. The main quest and plots in both games are well worth following though, as they handle mature topics like social manipulation, racism, cultism and other topics. The included DLC's in each game are great additions, allowing the player to forge a magical sword in U7 and exploring an ancient parallel universe in Serpent Isle. The original U7 is a more traditional medieval fantasy world wheras Serpent Isle is a more exotic and weird world to explore. I love them both.