How to purchase Microsoft Flight Simulator
Microsoft Flight Simulator is still available on DVD and as a download, but it is now recommended to purchase it from the game platform "Steam".
By registering a Steam account and adding games to your Favorites in the Steam app, you will receive notifications when discount sales begin.
If you are not in a hurry to buy, you may be able to buy it cheaper this way.
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Contents
How to create a Steam account
First, register an account on the gaming platform:
Steam
, and then install the Steam app on your computer.
Please note that when registering a new Steam account on a computer, CAPCHA errors often occur.
So I recommend that you register on your iPhone 
(Safari).
Open the Steam official website and tap the hamburger menu at the top left of the screen.
Steam Official Site
Then a menu like this will be displayed.
Tap "Login".
A login screen will be displayed.
Scroll the screen.
Tap "Create Account".
Enter the required information and follow the on-screen instructions to create an account.
How to install the Steam app
Install the Steam app on the computer where you want to play the game.
Open the
Steam official website
on your computer and click "Install Steam" at the top right of the screen.
Steam Official Site
Then you will see a screen like this.
Click "Install STEAM" and follow the on-screen instructions.
Once installed, launch the Steam app and log in with your Steam account.
Changing the Steam game save location : How much disk space do I need for MSFS ?
Software purchased on Steam is saved in "C:\Program Files (x86)\Steam\steamapps" by default.
However, the minimum required storage capacity for Microsoft Flight Simulator is 150GB, and if you include free optional content, it will be about 300GB.
Furthermore, if you install free content developed by users, it will consume about 500GB in no time.
Install on a disk with sufficient capacity, preferably 1TB or more.
Click the "Steam" icon at the top left of the Steam app screen and select "Settings" from the menu.
The settings screen will open.
Select "Storage" from the left menu and click the "V" mark to the right of the area that says "Windows(C:)".
Then click "Add Drive".
After a while, a screen like this will appear.
Click the "V" mark to select a new destination drive.
Click the "Add" button to add the drive immediately.
From now on, when you try to install new software on Steam, you will be able to select the installation destination.
In addition to the "C:" drive, you can also select the drive you added this time.
Search and purchase software
Open the Store menu in the Steam app and type Microsoft in the search box.
You will then see some Microsoft Flight Simulators.
Since its release in 2020, the latest version of Microsoft Flight Simulator has been released with different names.
The name of the current (2024) latest version of Microsoft Flight Simulator is "40th Anniversary Edition."
Click this.
The software introduction page will then open.
Scroll this screen.
Click the "Add to Wishlist" button to add it to your "Favorites".
You'll receive a notification when a discount sale begins.
Under that, "Add to Cart" buttons will appear. Microsoft Flight Simulator is available in three editions. Select the edition you want to purchase.
Editions can also be upgraded later for a fee.
Added to cart.
Click the "Buy for myself" button.
At this time, it was on sale for 40% off, and the Premium Deluxe Edition was USD71.99 (normally USD119.99).
Select your payment method.
"PayPal" is displayed at the top, but it seems that PayPal cannot be used in Japanese.
When I chose PayPal, I was unable to proceed further during the process.
Switch to your preferred payment method if necessary.
After completing the purchase procedure, open the "Library" menu in the Steam app and a list of the software you have purchased will be displayed.