ToME: the Tales of Maj'Eyal

I downloaded ToME 1.5.5 OSX 10.6+.
But It don't have game/addon folder.
And It can't download any addon and DLC on the game.
How can I use addon？
Other MAcOS user use Addon？

Right click on the app
Click Show Package Contents
The game folder is in Contents>Resources, and then you'll find addons.

Specifically, the path (once you open the app to show its package contents) is Contents->Resources->game->addons