Snow Leopard apps and games

You may be able to upgrade that computer to El Capitan.

Check that your computer is compatible with Mountain Lion/Mavericks/Yosemite/El Capitan.

To check the model number hold down the option/alt key, go to the Apple menu and select System Information.

iMac (Mid 2007 or newer) model number 7,1 or higher

Your Mac needs:

OS X v10.6.8 or OS X Lion already installed

2 GB or more of memory (More is better - 4 GB minimum seems to be the consensus)

8 GB or more of available space

Check to make sure your applications are compatible. PowerPC applications are no longer supported after 10.6.

Application Compatibility

El Capitan 10.11 Compatibility information

Also check to make sure there is a compatible driver for your printer.

Do a backup before installing, preferable 2 backups on 2 different drives.

You can try to download it at the link below.

El Capitan

Read through this link. It may require much patience but as 10.6.8 is no longer supported, many games simply will not work though you can always write to a developer and ask if they have a version that will work.

https://en.wikipedia.org/wiki/List_of_Macintosh_games#S