So follow the below guide to proceed.
This was the marketing way through which the developers used to sell their games by way of discs.
The users were free to share their game discs with anyone.

The users are now bounded to buy the games and hence cannot share those games with people easily.
Steam has introduced a new feature named Family Sharing to solve this issue.
Users could be able to share their games using this feature on Steam.

For those new to this feature, things could be hard enough to get the sharing task done.
Just go and read the article for all that!
Steam Family Sharing allows authorized or registered accounts and devices to share the games of some accounts.

And even a nontech guy can implement this easily using the straightforward guide we discussed below.
Also Read:12 Best Graphics HD Games For Android
1.
First, log into your Steam account through the desktop client.

You must get in through the desktop client only, as the feature can be configured inside that only.
Head to the Steam option and choose it.
Further, choose the parameters option to go to the preferences for making the alterations.

The options can be found on the top left side of the desktop client!
Go toSettings>Accounts>Manage Steam Guard Account Security.
From there, peek if Steam Guard is enabled or not.

If it is disabled, then title it to enable this.
You must choose between the two modes of receiving Steam Guard codes.
Select either email as your preference or Steam App as your choice.

The codes would be necessary for further steps, so choose the perfect way to achieve these codes instantly.
The list could be managed to enable or kill the sharing function of Steam.
With this, you complete the basic setup of the game.
Do read the below discussion too.
They can easily play those games from there.
And not every game could be shared through the feature.
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