I've got a couple of people in my life I would set up, take care of my family's long term debts, set aside enough to retire tomorrow, and find a charity I really liked to donate the rest... the fuck I need that much money for?

I'd immediately try to give away most of it to a good cause I carefully researched or pull up my own organization that tries to tackle problems that could be improved with that kind of money.
You can't be a billionaire and a good person as you decide to not share an outrageous amount of wealth you couldn't spend in multiple lifetimes without diving into more and more absurd forms of consumerism.

I already live where I want to live. I would probably buy up all the open land in my county. Get my friends to move out and live on one of my properties. Fix up this 120 year old farm house. Install a pond and more water features to hold onto rain water. Probably run some electric fencing get solar power go off grid. Pretend to be a cattle rancher. Try to turn this homestead into my very own paradise. But i’ll probably employ a-lot of people create some jobs do more charity work.

Pay off all debts and mortgages for myself and my immediate family, then put away whatever’s away into separate HYSAs for a few months to let the initial rush go away.

Keep it a secret until my kids finished school and became adults. Then travel for endless summer, or maybe autumn. have some investments as backup in case things go balls up

Realistically, and assuming I claimed it and handled the financial and legal aspects of having that much money, I’d do this;

Pay off my debts, as well as those of my parents and sister, then help friends pay off everything. Then buy a nice house and nice stuff, leave my job, then travel.

Then I’d see what sorts of things I can use my money to improve, or who I can help.

While money is nice for security, I don’t need or want anywhere remotely close to 1$billion at one time. That amount of money is dangerous.

Buy a bottle of McCallans 12yr and a 8ball and see where I wake up next week.

Go to a casino and walk up to a roulette table and put it all on black.

Basically follow what these guys say: https://www.youtube.com/watch?v=JTurSi0LhJs

Build a high-speed train from Columbia, SC to Charleston, SC. In the grand scheme of things, it might seem like a waste of money. But man, for the few dozen years I’ve got left on this earth, it would be awesome to see & experience.

Hide it.

Start my own research company.

Pay off all my and my immediate family's debt. Renovate my parents home or get them a new one, give my sister a nice home wherever she wants, buy myself a new, basic vehicle for my commute, and get a nice place for myself close to my work. I'd also start my own creative studio to work on the game I've been making. And, also try to put my excess money to good use by trying to help out people with housing issues and health problems. All while keeping the fortune a secret.

I don't wanna remain a millionaire.

I’d buy an electric car, a 40 watt laser engraver, I’d build a workshop in my side yard, install a vented hood, get some new larger 3d printers, a paint airbrush system, set up a bicycle repair area, and set up a computer workshop in there. And never leave my workshop.

no importa lo que hagas ni pienses, vas a morir igualmente

no matter what you do or think, you will die anyway

I would use the entire $1 billion to buy company stocks and use them to try stop their bad behaviors/investments, like stopping Big Petrol from polluting more, Google from spying on their users, etc.

Have you ever seen office space? Peter's answer or his neighbor's answer. Probably both.

My usual luck would appear and I would die in my sleep before I can cash out.

Put it in a bank earning 4% interests and live off of it for the rest of my life. Yeah I'm a simple man.

Hire an accountant.

Find a reputable institutional advisor who specializes in this sort of thing. Pay off debts. Quit my job. Eventually begin planning some charitable gifts, perhaps even a foundation or something. Make life meaningful that way.

I hope I could have it pay out maybe $1 million a year for 1000 years. If not…

I would find a financial advisor how to save and invest properly so my money could make money. I would give a bunch to my parents and sibling so they don’t have to worry. I’d give a bunch to my extended family. I would give a bunch to my friends. I would restart a nonprofit I was a part of. I would build housing and a support system for unhoused people. I’d buy some medical debt on the market to forgive it. I would lobby a few politicians to do some good things. I would travel some.

first thing I'd do is buy my mom a house and py off all our debt. It'd be nice to have some time alone as an adult without having to leave her homeless or whatever. Next I'd find a restoration shop for my truck, buy the shop and make them fix my truck. Why buy the shop? Why not I've always wanted to be an automotive restorer and now I've got whatever is left after taxes and fees. Then I'd probably have my own house built the way I want it. After that idk. I'd have more money then I'd ever know what to do with, have my own shop with the latest and greatest gear and the best mechanics around. I'd hav le my own house and my mom would be taken care of. I'd probably buy my best friend and her parents a house, afaik she still lives at home and her parents rent.so that'd be doing them a big favor.

Whatever the hell I wanted to do. Rich people don't go to jail.

First, I would purchase my favorite charity from the lovely lady (a friend of mine) who runs it for 10 million. Then I would expand its reach a lot.

Hire and accountant. Taxes are too complex and most lottery winners are bankrupt in 10-20 years as they fail to budget correctly.

I'd probably pay off my house, upgrade the furnace to a heat pump (something i'm doing with the next bonus anyway) turn the rest over to charities. Though with that much money finding charities that can even accept that much money is hard.