Разберем слово НУБ

History
Etymology of the term is uncertain. It may derive from "newie", which is attested in U.S. and Australian sources of the 1850s, meaning a neophyte in a place or situation; alternatively, it may derive from the British public school slang "new boy" or "new blood", which is attributed to the same era and was applied to a schoolboy in his first term.[4]
In the 1960s and 1970s, the term "newbie" had a limited usage among U.S. troops in the Vietnam War as a slang term for a new man in a unit.[5]
Another use of the term newbee was the moniker given to new U.S. Navy recruit students attending Basic Electricity and Electronics school by more senior students, a requisite course prior to enrollment in the A-school course at Naval Air Technical Training Center, Millington, Tennessee.[citation needed]
Its earliest known usage on an internet[note 1] may have been on the Usenet newsgroup talk.bizarre.[6] The term is believed to have entered online usage by 1981.[7]
Coming from an oral tradition, the term has various spellings. Among alternative forms are "newby", "nubie", and "newbee" (e.g. Los Angeles Times of August 1985: "It had to do with newbees. I could be wrong on the spelling, but newbees are the rookies among the Blue Angels.").[4]
In 2000, Electronic Arts released The Sims. The game featured a tutorial house with a family called The Newbies.[8]
In 2009, "noob" was among candidates for the one-millionth English word selection by the Global Language Monitor.[9][10]

нуб это сленговое от н'юби - новичек.

Я думаю пошло от игроков которые на евро/америке играли раньше в ммо. Я до сих пор говорю Сильвермун вместо Луносвета и Андерсити вместо Подгорода

Newbie (новичок) - newb - noob. Что-то вроде нашего Человек - Челик- Чел. Просто максимально ужатый интернет-жаргонизм.

Версия с нуб-сайботом интересная конечно, удобно подходит. Но вряд ли есть связь

Да именно от туда и пошло. Так как только нубы постоянно играли за Нуб Сейбота с лёгкими комбо и супер-приёмами, не могли запомнить как играть другими персами.

Нет
Noob - новичок (в переводе с пиндосского)
И ничего боле
Так называют в геймерской среде тех, кто играет слабо