You know, he/she had it, it was awesome, and it was almost the sole reason you had for visiting your friend. You would covet it, but either you didn't have enough pocket money to buy it, your parents wouldn't get it for you, or you didn't have the system for it.

For me it was tmnt game. I had to wait several years before getting an NES myself, but sadly I never saw that game in a store. I did manage to get [url=http://www.mobygames.com/game/nes/teenage-mutant-ninja-turtles-iii-the-manhattan-project/screenshots]tmnt III which was just as good, and just as madly difficult. By the end it didn't matter that much anymore, because I got a game that was better than both of those combined: http://www.mobygames.com/game/gi-joe-a-real-american-hero_

Dark Forces. He also had a 486 that could play it pretty well.

KARATEKA
Tecmo Super Bowl

Okay that's two games. :P

I was the friend who had street fighter. the very first game.

I had others visiting my house every day to play that.

Virtua Racing, cost a pretty penny back then, around £74 quid he paid iirc.
Carn't remember what the hell i lent him in return for playing it....prolly a rpg knowing me.

Halo 2

In present day, it's Super Smash Bros on Wii U :P I think this is the ultimate console game. I've played it for a insane amount of time on my friends' consoles, and at LAN-parties. It's such a great local multiplayer-game.

The Maze of Galious.
He had an MSX, I had a Commodore 64.

All along my teenage years I had friends who had those games or consoles that made totally worth it to visit them.

I had a friend who had a NES (when I had a Super NES) and had Castlevania 1 and 3 and Ninja Gaiden 3.

I had a friend who had Warcraft 2. Another had Full Throttle and Cyberia, other had Megarace 1 and all sorts of adventure games (GK1 and 2, Phantasmagoria).

I had also a great friend who had a PS1 that could run pirate game when mine couldn't, so I'd go there and play all sorts of pirate PS1 games he had.

These are just the ones I remember easily. There probably were others.

Romance of the Three Kingdoms 2 (SNES).

LEGO Island. Friend "J" had it, and my brother's friend "C" had it (the main reason I visited his house back in the day), so I took every opportunity I could to play it (which annoyed them and their mothers somewhat; "J" was an outdoors guy in general). Also "J" had DX-Ball.

Eventually I got my own copy but couldn't figure out how to run it on family's computer, but it ran smooth as butter on my grandmother's (with a fancy 3D accelerator card), so I took every opportunity I could to visit her house. (She lived only 15 min away.)

Thrill Kill for the Playstation One.

Pong.

Honest.

Peter Jackson's KING KONG for PlayStation.

And this friend actually was my godbrother. He is much younger than me. Back in the days when I used to visit him, he would mostly want to play with PlayStation and me. As in, play the game in turns (turn lasted until death or a few deaths). Such playing worked very well for us and King Kong was the game we both loved.

Same. My friend was the first one to get it in our (small) town and it was so expensive at the time that he was the only one who had it for a long while. There used to be a group of us that would go over to his house on a regular basis to play Pong tournaments. Good times.

Well, my friend had a NES. Probably the only one in our town at the time. We would play Mega Man for the most part, and some other titles that I can't remember any more. My dad got wind of this and bought me a game boy ("it's still a Nintendo, but you can take it with you on vacation"). Ahh, days of glory.