I’ve been enjoying cloudhiker.net -it very nearly is what stumbledupon was back in the day. So much so, it used to be called stumbled.cc up until a couple weeks ago.

Anyway the premise is the same - you have a button a that takes you to random interesting websites.

My personal ones:

• Euro Truck Simulator 2, with some heavy country music blasting on the radio
• Gnome Mahjongg
• Dorfromantik
• On my arcade machine lately VS Dr Mario and Tapper