How many starfox games are there?

In total, the number of games released is 5. StarFox(SNES), StarFox 64 (N64), StarFox Adventures (GC), StarFox Assault (GC), and StarFox Command (NDS). The number of released games will reach 6 when StarFox 64 3D is released to 3DS.

Of course, there are three other games that were planned and never released. StarFox 2 (SNES), Untitled StarFox game (Virtual Boy Tech Demo), and StarFox (Arcade) which was to be released with Assault.

Not only that, but a Star Fox Game Watch was released in the early 90's, and Fox McCloud (and friends) have been in every Super Smash Bros. game to date.