I just found out that there are two amazing star trek games that act just like 2 extra seasons of the original series. I was just wondering if these are cannon.
Anytime you're unsure if something is part of Star Trek canon, the answer is always no. Similarly, if you're unsure whether your religion is actually a cult, the answer is yes.
They're both great games, and both are very authentic to the spirit of TOS. But no, they aren't canon. None of the Star Trek video games are.
Nope. Nor any of the novels, comics, technical manuals, the other videogames or fanzines canon either. But canon is not and never will be a gauge of quality.
There's a disclaimer in the front of the TNG tech manual stating outright that it has no pretensions about being 'canon' (besides, several things mentioned therein, such as all the talk about the Starfleet's next big new starship design, were explicitly denied by future screen material). Much to his credit, Okuda's books over the years (the chronology too) were always quite humble in saying, "We do not own the canon". Even though, as a member of production staff, he probably could have imposed his own interpretation as being the 'real' one if he wanted to... he never actually did, except in those cases where it came up naturally on-screen and he was able to sneak some of his explanations into the canon. On those occasions it became legitimate, but unless that happened then... nope, nothing in the tech manuals is strictly canon, unless the reader wants to interpret it as such.
There are many posters on this board who regularly comment on this issue - how even "official" canon is often ignored or modified in some way. But to trot out the "party line" - if doesn't happen on screen in a completed episode or film, it isn't canon. Oh, one other thing, let's just ignore TAS in reference to the above if that's OK!
And, please, as a public-service reminder to all concerned: the word is "canon," not "cannon." Sorry to be a spelling freak, but, honestly, it's like like nails on a blackboard . . . like "Kahn" instead of "Khan"!
"Not now, Madeline!" by Therin of Andor, on Flickr or http://www.trekbbs.com/showpost.php?p=3604412&postcount=25 or http://www.trekbbs.com/showthread.php?t=33391
While Berman-era Trek definitely considered only the films and television shows canon, I should point out that "canon" is whatever the person currently in charge of the franchise says it is. If CBS were to put out a press release stating that, say, ENT was no longer canon, then it's no longer canon. If they say that the novels are now canon, then they are. Of course it's highly unlikely that will happen.