You normally have to provide proof of vaccination history when going through the immigration process.
Nothing more American than Apple(pie) and tax evasion.
I do not believe there are any age restrictions but you have to be a student (but any type of student is fine so you typically have older PHD students who participate).
Definitely not limited to one country - they are basically one of the largest video game companies in the world with majority holdings in Riot Games, Supercell, Epic Games and a large percentage of Activision Blizzard.
You normally have to provide proof of vaccination history when going through the immigration process.
Nothing more American than Apple(pie) and tax evasion.
I do not believe there are any age restrictions but you have to be a student (but any type of student is fine so you typically have older PHD students who participate).
Definitely not limited to one country - they are basically one of the largest video game companies in the world with majority holdings in Riot Games, Supercell, Epic Games and a large percentage of Activision Blizzard.