Flash content is getting blocked in the latest versions of browsers. To enable it in Google Chrome,
first open your browser and type chrome://settings/content/flash in the address bar or go there from
menu "Settings / Privacy and security / Site settings / Flash". On a flash setting page, set toggle
to Ask first (recommended). Now, with Flash enabled, whenever you visit a webpage with Flash content,
you’ll need to click on the Flash player for it to start.
In this game, a balle is at the top of a combination of slopes and flat parts. Your aim is to bring the ball down the slope into the hole at the bottom, without it getting out of the way. For this purpose, you have to guide it with the arrows of your keyboard. Two arrows can be combined to make the ball go diagonally. This game is difficult and need time practicing until you are able to get the ball's moving under control. There are several levels of difficulty. Good luck.
If you want to play this game offline and without any browsers after December 2020, then download .swf game file and use any Flash Player that runs .swf files.
For Windows users, I recommend ARFlashPlayer (it supports fullscreen option) or official Adobe Flash Player. Both programs are portable.
Another way to play flash games is to install SuperNova SWF Extension (it works in Chrome only).