Here is how I could have it set.
It begins with "You" at a desk, and you have this set of papers that serve as your menu, options, etc...
Moving into a sort of character select...but its more sort of a Character definition screen.
Ending with you simply submitting that into a sort of mailbox...which dispenses basically a ticket for you to come.
The place you visit is effectively...the Ether Garden.
It is a Walking Simulator game, that allows you to explore this area...that sometimes you'll encounter certain events that involve Ether Creatures.
An idea being that you come across a pond and see some Aquatic creatures...maybe you can skip a stone at them...or (a weird one I had) You have a sort of...bubble blower.
Another idea is that an Avian Ether lands...you can come up to them, examine them...and maybe it'll offer to give you a lift just to see the whole place.
And you end the game by just simply walking back through the portal you came through...you arrive back at the desk and this mailbox dispenses a basically "Did you enjoy your time?" paper.