Demo that made you want to buy a game?

I think the first ratchet and clank but I waited. Til price went down.

rome total war, Fear, goast recon advanced warfighter, rainbow six veags, heros V,

The F.E.A.R. demo was also great and led me to buy the game. 

There were plenty back in the PS1 days, but to name just one: Metal Gear Solid.

Man, I must have spent hours playing that demo over and over. It was just so amazing and fresh and I loved thinking of new ways to mess with the guards in those same two little areas. Then I begged my parents to get it for me as a reward for straight A's on my report card lol. Ah, good times.

Call of Duty, did both the demos and was impressed, then I went off to buy GTA:SA but found out they didn't have the game there, but I did saw CoD and the expensionpack UO, was a great deal.

Also, FEAR.

Lots but one that particularly stands out would be the demo for Indigo Prophecy. I bought the OPM  that had it because it had a demo I was interested in (can't remember if it was the SotC or Battlefront 2 issue) but anyway I tried it once and thought the premise was interesting but nothing special. Then I saw my brother try it out and he got different dialogue trees and options that I didn't notice the first time. That's when I thought this game is going to be different...

I was right, it was a good game, it's just that the last parts were bloody rushed...

a lot of demos actually do the reverse for me. i end up skipping over the game after seeing lack luster demos...

The only games I recently purchased because of a demo was Crackdown

Crackdown was a game I had absolutely no interest in until the demo. Love it.

Most recently, Area 51: Blacksite's demo impressed me. I saw a lot of potential in it and took it from a game I'd never even heard of onto the watch list.

1. Rome total war: didn't play any demo, but when I saw the BBC series I had to get it @ launch, still don't regret it
2. Warcraft 3: really liked the demo, but didn't like the Undead campaign in the main game at all
3. Neverwinter Nights: I thought the demo was pretty cool, but the game in general didn't blow me away though
4. Lego Star Wars: nice demo, great game
5. X-Wing Alliance: didn't like the demo that much, but I absolutely adored the main game

Call Of Duty- Those demos were just awesome.

Tomb Raider Anniversary- loved it.

Company Of Heroes- Had no interest in the game until the demo, which I downloaded as I was bored. I wasnt bored for a looong time after that :) 

Crackdown, Have not bought yet, but the demo has convinced me that it is a good purchase

Just Cause- I loved the non-stop stunts and action. I still prefer the demo to the full game :(

I must say, I do generally play demos more than full games on the 360, because I just cant afford £40 for 1 game.

FEAR and STALKER most definately. There has been a few others, and then there have games that I thought I would like but after playing the demo realized it wasn't really what I expected. One such game was Area 51.

No doubt it was F.E.A.R. on the PC for me, the demo was amazing. TicTac8745

Yeah the demo blew me away...though I still haven't bought the game. Waiting  till I upgrade my PC. 

FEAR and STALKER most definately. There has been a few others, and then there have games that I thought I would like but after playing the demo realized it wasn't really what I expected. One such game was Area 51.

Werner73

There's a STALKER DEMO?!?!!? 

[QUOTE="Werner73"]

FEAR and STALKER most definately. There has been a few others, and then there have games that I thought I would like but after playing the demo realized it wasn't really what I expected. One such game was Area 51.

bigmit37

There's a STALKER DEMO?!?!!? 

Nope.

Condemed: Crimal Origins. That demo was scary.isaach11687

Ack! I forgot that one. Great demo for one of the best 360 games to date. 

DiRT.

I'll probably buy it on day one.