hello

can someone explain who, what, where, when and why this website is.

this is basicslly just a fun mariokart website. i guess. i don't know.

Yes you can play Mario kart. You can create your own race track or play tracks made by other people

"What's Mario Kart PC?
You might know Mario Kart, the most fun racing game series of all time! Mario Kart PC uses the same base as the original games but is playable on your browser, and for free.

Most of the modes from Mario Kart have been included: Grand Prix, VS, Battle mode, Time Trials, and more!
There's also a brand new mode: the track builder! Place straight lines and turns, add items, boost panels and more! Everything is customizable! The only limit is your own imagination!
You can share your tracks, and try other people's tracks thanks to the sharing tool. Thousands of custom tracks are already available!

Finally, you can face players from the whole world thanks to the multiplayer online mode! Climb the rankings and become world champion!" (Copy-pasted from the home page site information)

This site was created in 2010 and the owner of the site is Wargor.

It is a Mario Kart on Computer, where you can create your own circuit and test those of others there is also a forum for .... bah talk, and also shop online. And there is also a Time Trial, and Grand Prix like all Mario Kart (I was not very precise)