Method 1:
Step 1: Open Software Manager from Menu ( Mate desktop session).
Step 2: Search for Adobe in right top corner.
Step 3: Select Adobe flash plugin 10 and then click on Install button.
Method 2:
Step 1: Open Terminal ( Gnome 3 Desktop session: Application —-> Accessories —–> Terminal or Mate Session: Menu —-> Accessories ——> Terminal)
Step 2: Type the following command to install Adobe flash player.
raj@geeksite~/$ sudo apt-get install adobe-flashplugin
That’s All! Now you can start to play all kind of favourite flash games or movies online.