Do those "multiple romantic partners" know about each other? If the answer is "no" then yours is a very jerky suggestion (I know "jerky" is a harsh word for this forum, but I can't come up with anything else to describe this).
Those years ended for me a long time ago, but they were important, for me, and for my partners at that time.
I feel this is nitpicky, but considering the GP's point about entering predefined games...
Some people don't want exclusivity, but also don't want to know what you're doing with other people.
> Share multiple flats with multiple people (i.e. live in multiple places, but cheap)
I've never even heard of people doing this. How does it work? What's it like? It sounds fascinating, and like something I should've tried in my 20s.
You can also rent a room in a shared flat, which is cheaper.
From the money you save, you can rent another room in another flat.
Some of my friends even let their rooms to other people while they were out of city to save money.
it's like Airbnb without the middleman ;)
Carry a pad and pencil and do sketches of strangers.
Walk or take public transport in random directions.
Put a chair outside and spend all day there.
Sleep on the balcony.
Draw graffiti.
Experiment with clothes, hair color, face paint.
Work out outdoors.
Tell people funny lies.
Go hungry just to feel hungry.
Bake cookies and give them away.
Talk to people nonverbally and see how much you can express.
Modify/deface objects to make them look funnier.
Just not in my city please...
You can go further though: sleep when you're tired. wake up when you're done sleeping.
It literally makes me sad how few people actually can experience this.
I have done this when I got caught up in a really good book and read until 4:00 AM. Generally, I wake up on my own, before the alarm goes off, but it is a safety valve.
for me sleeping until well rested led to sleeping till noon.
Sleep until noon every day.
Work only as much as you need.
Work from home, or anywhere else for that matter.
Have multiple romantic partners in parallel.
Have platonic friends of the opposite sex.
Share multiple flats with multiple people (i.e. live in multiple places, but cheap)
Study 10 years.
Make your own iced tea in the fridge.
Buy food in bulk.
Drink tap water.
Create your own dishes by mixing ingredients.
Cook/fry/bake food you would usually eat raw.
Eat food raw that you would usually cook/fry/bake.
Sleep everywhere in your home.
Learn languages, instruments, or sports after you turned 30.
Drink no alcohol at a party and still have fun.
Start/stop smoking and drinking after 30.
Found a company like you would buy a game console.
Take no VC money.
Take muliple years and tries to create a good product.
Write music/give concerts for yourself or your friends only.
Don't wear shoes outside.
Don't have an opinion on a topic.
Overall:
Don't play pre-defined games in your life, but ask if they make you happy. You only have one life, make the most out of it.
Sometimes you have to play by some rules made up by other people to get into a better place, but look at them closely, it could very well be that they are more open to interpretation than they first seem.