Yeah.

N64 only for Zelda.

Xbox only for Halo.

I regret both lol.

PSP For Final Fantasy Dissidia, but i have found anothers great games in this console.
PS2 for Final Fantasy XII ( i had played FFX in the PS2 of a friend), then again i got another great games for this console.

and ill get PS3 For Final Fantasy XIII, but i like MGS series a lot, so i think is for MGS too.

I have but then I've always got more games for it over time.

360 - EA NHL games.

If an exclusive Tales game gets announced for the PS3 I might pick up one of those as well.

Begged for an Atari 2600 because of Pitfall.

Traded for a ColecoVision because of Donkey Kong Jr.

Begged for a Vectrex after seeing Minestorm.

Traded for an IntelliVision because of Dungeons & Dragons (Cloudy Mountain).

Bought the 3DO because of Road Rash.

Bought a 486 for Doom.

Bought the N64 for Ocarina of Time.

Bought the PS2 at launch after seeing Madden 2001.

Bought the Wii for Twilight Princess.

Bought the DS for Diamond / Pearl.

I could go on ... so yeah, I've owned virtually every single system at one point or another because of ONE game I had to play.

gamecube for melee

I Purchased a GBC to play Pokemon Blue.

Yes, I purchased my PS3 for MGS4, and I am ready to sell it.

PS2 for Final Fantasy X. My brother had a PS2 and FFX. I came home to visit and watched him play it. I was hooked. I bought it and FFIX (PS1) when I got back to Chesapeake.

X-box for Knights of the Old Republic. My best friend brought over his X-box with KotOR and the rest was history. I refused to shop at Wal-mart and everything else was closed at the time. The next day I went to Circuit City, R.I.P, and picked up KoTOR and a X-box.

I regretted neither decision. I got to play some good RPGs before my PS2 fell victim to DRE and after my PS2 died. I bought all my multi-platform games on X-box.

My Mom got a 3DO for Star Control 2. She didn't regret it. That game is still one of her all time favorites.

I never did myself, get a system just for one game that is.

360 for halo 3 and then like other games came along