Nakatomi Space
This post reminds me a bit of some games, which would normally be called "immersive sims". One of their biggest draws is how they let you interact with the environment in such a variety of ways. A blocked-off entrance isn't a set scripted objective or a tool for the developers to get you to go elsewhere - it's an opportunity for the player to find a creative solution.<p>Blow up the barrier. Pick a lock. Break a window. Reach through an opening to press a button to open another door. Enter from vents or sewers. Alert an NPC so they open another entrance to check it out. Shut off the power elsewhere. Etc.<p>It's so much fun to have all those options with how you interact with the environment, instead of it just being static and 1-dimensional.