I'm going to count Dinosmash here, another one of Eurocenter's games. All three of us moved on to Graal anyway. Met three great people, two of which are still my best online friends right now and whom I've played with on a daily basis since 2009, and the third, while I don't speak to them anymore, introduced me to a lot of his friends which soon became mine, who I've even met up with in real life, and still talk to today. It's also safe to say the third friend introduced me to more online gaming in convincing me to buy a 360 along with the other two which we all tagged along on for years until we moved to PC gaming.
Easily safe to say that these guys jumpstarted my addiction in gaming, from thousands of hours on Graal to countless more on 360 and PC. They're great guys, I've made a ton of incredible memories with them, and we're still kicking it on CS:GO, League of Legends and whatever other games we can all pick up on Steam. Even as I write this post right now, my 7 hour Skype call with one of them is still going on and we're having a hell of a time in competitive CS.
I'm not sure if it's what was exactly "best" for my future, since I was on a great academic path and your typical obedient, by-the-book student with great grades before I got hooked on gaming which distracted me from school a lot and noticeably dropped my grades and work ethic. Could be said that if they didn't, I'd find something else to take gaming's place, but even if that isn't the case, wouldn't have done it any other way. Still would have hit that install button.