1. Rock Paper Scissors: http://www.rock-paper-scissors-game.com

Wanna play the old game but don't have anyone to play with?
2. Difference Between: http://www.differencebetween.net

Covers a wide range of topics to know what separates 2 things from each other.
3. Retro Type Generator: https://photofunia.com/categories/all_effects/retro-wave

Pick a background, text style and write whatever you want with an 80's vibe
4. Wait But Why: http://waitbutwhy.com/2013/08/putting-time-in-perspective.html

Puts time in perspective.
5. Netflix Time Calculator: http://tiii.me

You give it series you want to watch and it'll tell you how much time you need to watch it back to back.
6. Virtual Dominoes: http://domino.roilipman.com

The site where you can virtually play with dominoes.
7. Send Paper Planes to People: https://paperplanes.world

You can digitally throw a paper airplane using your phone, and can catch other airplanes.
8. World of Oil: http://www.gsmlondon.ac.uk/global-oil-map/#2014-importers

You can learn all about the oil industry, all around the world and across time.
9. Comet Viewer: http://sci.esa.int/comet-viewer/

Displays 67p from the Jupiter family so you can watch it up close and explore its regions.
10. Play With A Spirit: http://edankwan.com/experiments/the-spirit/

Beautiful display that you can move around the screen and you can change different characteristics of it.