I haven't gone through the entire series yet.  I have yet to play Star Fox Assault.

For me, I am mixed between Starfox 64 and Starfox Adventures.  While Starfox 64 was better to its roots, Strafox Adventures was a nice Zelda clone so it is hard to hate on that.  Starfox 64 was what really defined what a fan would want out of a Starfox game.

What about you guys?

Dude. You can't pick something other than Star Fox 64. It just wouldn't be right.

Star Fox 64.

it would have to be Star Fox 64.

Star Fox Adventures.

Star Fox 64 wins by default, it's the only one I've played.

Starwing.

Oh, wait..

Star Fox 64 

Star Fox 64. 
 
Although I did enjoy Adventures and Assault, but 64 is the only true Star Fox game.

After Burner Climax

64 of course

Star Fox 64

Star Fox 64 by a mile. Also, this post should have been a poll.

The only game I've played featuring Star Fox is Super Smash Bros.

starfox 64 by a mile.

Lylat Wars or Starfox Adventures for sure.

Starfox 64 for sure.

Star Fox 64 is the obvious winner but I think the most underrated game in the series is Star Fox Command on the DS. The stylus controls worked really well which surprised me. The game definitely had its flaws but it was a fun game to play to waste some time.

Super Smash Broad.

64 is the only acceptable answer.

64

64.

Only played that one and the snes one though.

Never actually played Star fox. I haven't had the opportunity to experience those majestic stars. I've always wanted to play this star fox game on the gamecube, but never did.

64

I don't remember much o Star Fox for the SNES and the only other ones I've played were Star Fox 64 and Star Fox Adventure so I'm going with Star Fox 64.

Star Fox 64 obviously.

Star Fox 64, although I really love the vector graphics of the SNES one. I'd love a new SF game done in that style.

Star Fox 64 was such cartoon kiddy crap… everyone moved and talked as if they have diabetes

64 for the SP, Assault for the MP, Command for the ideas but hated it for that horrific control scheme.

Star Fox 64. Duh.

Oh crap! I haven't played any of them a whole lot, but I spent a loooong time watching every strategy guide video for 64 off that magazine disc and wishing I owned an N64 with which to play it.

@Dimsey said:

Star Fox 64 wins by default, it's the only one I've played.

This!

I liked Starfox Adventure the most.

Hey you, shut up!

the original starfox for SNES was the best. it kept me occupied for many many hours.