My Favorite game is between Castlevania Dracula X(SNES) or Fire Emblem(7) on the Gba or even Mega Man 8. Man it is hard to choose.

for me its final fantasy 7 it was the first final fantasy i played and the first ps1 game i got and i still play it to this day the characters and storyline is awesome the materia system is cool and iv never played a game as much as i did that i have completed it countless amounts of times but still end up going back for another go it also made me play all the other final fantasy series too but id still say this is the best one  

Is hard to decide my favorite game but I think its
 infamous ps3
why because of the powers how often do u get to play as a dude who fires Lightning out of his hands that is not  out off the star wars universe and there was a lot of powers that varies depending if u were good and evil   plus u had the options of being a great hero or just a unstoppable villain  and the people reacted to the decisions   you took is very impressive also the story in the game was great I wont give out spoilers for those that still haven't played infamous 1 or infamous 2

Right now my favorite Video Game has to be Uncharted 2 or Metal Gear Solid 4.

Both games I recently replayed, and they were JUST AS AWESOME.

FullmetalFan870 : too bad that game sucked :x

Darkshaymin1: tag was better

gta 4 is my favorite.i know they are making gta 5

i like kingdom hearts it has a nice story to it and so times it can be confusing but still a awesome game i love the gameplay too.

All The Final Fantasy series ... they have their flaws but they do a fair job of bringing you into the story

Mine is Darkstone for the PC

Sonic Generations is going to be my favorite game when I get it. =3

My favorite video game of all time is Super Metroid. I love that game. My favorite game series of all time is the Megaman X and Zero series'. My favorite modern games are Halo.

Fatal Frame is my favorite game serie, because it's an good, uncommon and original survival-horror, I love the Japanese horror movies side, the ambient is really gloomy and scary and I really want to get the fourth episode released in Japan but I noticed somewhere on the Internet that we can download an English translation patch for this game which is really cool

This could take a while. I can never answer this question with simply one word. I have to go deep a little bit more. I would separate my list into categories because I just can't answer this question if it was asked like this.

Adventure games: I believe this is the most obvious and memorable favorite games to almost everyone. 

1- Legend of Zelda: Twilight Princess/Majora's Mask. On the Wii and Nintendo 64 (Tie)
2- Super Metroid. On the Super Nintendo
3- Shadow of the Colossus On the PS2
4- ICO on the PS2
5- Final Fantasy VII / Kingdom Hearts 2. Both on PS2

I'll explain a little bit why I would choose this list to be my top adventure games of all time.
1- Do I really have to Explain more about the Zeldas...
2- Super Metroid was on of the first video games I've played ever. There was only one video game console for the whole family and not so many games; fortunately, Super Metroid was on of those games. I played this game for hours and hours trying to explore the place. I believe this game was the game that pulled me more and more towards video games as a kid.
3- Shadow of the Colossus made it here because it's a boss game. I always played Zelda games and I enjoyed fighting bosses the most. This game took me from one boss fight to another without a gap in between. And most importantly, everybody was a puzzle. It's gets harder and harder every time you take down a boss. Moreover, somehow, this game was the only game that I enjoyed by doing nothing (what do I mean??) After each boss fight, the game gives you time to run around on your horse doing nothing but looking for the boss. This part of the game pissed off a lot of gamers; but that didn't happen with me; I loved that part because it kind of gave me time to look around and see how beautiful this game really as. It was kind of a small break from the excitement feeling you get from the boss fights.
4- Just simply because it was related to Shadow of the Colossus. I know this might be a lame reason but this is my list ^^"
5- First two games that really pulled me to rpg. Absolutely amazing games, and I really don't think anyone would disagree in anyway with these games taking the top of the list. 

Moving on to Multi-player games: These are the games that were really fun to play with other people specially sitting on the couch with buddy for hours just playing and hitting each other if we get angry. Online gaming saved many of these games, but come on, we all know it's not as fun as playing in the same room with another gamer... Anyways.

1- Street Fighter franchise
2- Super Mario Bros. On the Wii
3- Resident Evil 5. On the PS3
4- Warcraft titles (Including World of Warcraft) on the PC
5- Guitar Hero titles. On the PS3

Why??

1- I played my very first fighting game one the SNES, which was of course Street fighter II. I was very small so my older brother and his friends wouldn't let me play with them. But when I got my hands on that game I played for hours and hours; never got bored of it. It's Street Fighter for god's sake. 
2- Believe me you'll understand if you try it out with 4 others. Just remembering the stupid moments I'm like LOLOLOL.
3- Let's be honest Resident Evil 5 SUCKED!!!!(as a single player) but it was very fun when I played it with my cousin. Boss fights weren't really the best thing. Running away from the damn zombies was the best part. 
4- This would easily be on the top of the list if i'm writing this post 4 years ago. The release of the new content in World of Warcraft is just really weak. The game isn't the same anymore.
5- Very competitive and fun to learn.

My favourite is Legend of Zelda Ocarina of time. 
It was my first Zelda game I played and i loved the story,the character's music and the Cinamatics also being a kid at the time had a bit of a crush on the princess i admit but i was a kid so lol . And one last thing a probably might just say been a fan ever since Obliviously 

My favorite game is Super Smash Bros. Melee for Nintendo Gamecube.I like it because you can play with your friends to see who is better.

My favorite video game{s}is Mario!

My Favorite Video Game Is SSB games and I also like The Legend Of Zelda Games, too. I like almost every fighting game and action game.
Some games I just enjoy because I am with my family. I like getting games for my family because they get happy and thank me a lot. I like it when I am not in trouble and I do not like school. I like Super Smash Bros games because they are fighting and I like fighting games and I like fighting the master hand. I also enjoy playing as master hand in SSBM. I enjoy the Legend of Zelda Ocarina Of Time, Majora's Mask, Twilight Princess, Oracle Of Seasons, Oracle Of Ages, Links Awakening, The Legend Of Zelda, and many more. I cannot wait until Skyward Sword comes out; I will be waiting!

My favorite game right now would have to be a tie between The Legend of Zelda: Ocarina of Time or Spider-man: Web of Shadows. Both have amazing story-lines and characters. I love Web of Shadows for being able to control the outcome of your game, and Ocarina of Time is just a peice of gaming awesome-sauce!

I'll have to say...All of the Legend of Zelda Series. Although i missed a few of the earlier games, i really like the more recent ones like Windwaker and TPrincess. i cant wait to play Skyward Sword!

Any Dragon Ball Z Game