Guh, I was afraid to contribute to this because even tho I can make a top 10 list easy, Im not so good at explaining why I like these games as much, but i'll give it a go, best I can
In no particular order(except for number 1):
10: Paper Mario: The Thousand Year Door
The sequel to the original game, it took all the best elements of that game and added so much more. The ability to now contort your body in different ways to get to different areas was added, new partners with new powers were added, more badges, new star powers, I could go on and on. But what I really liked about this game was the replay value. After you defeated the main villain of the story, there was still so much more you could do afterwards! It was like you had only completed half the game by defeating the final boss! There was still more badges or items to get, heck, there was even still another partner you could obtain! And lets not forget about the Pit of 100 Trials, odds were that you were too busy or werent strong enough to complete it before hand, well now you have all the time in the world to do so! Just one fantastic game.
9: Sonic Adventure 2 Battle
Right off the bat, I have to say my favorite thing about this game is the soundtrack. I still listen to it to this day. You dont notice it as much while playing the game because one: youre obviously focusing on the game, and two: the background music is kinda soft, so its harder to hear unless youre actually focusing on it, but damn is it amazing. Onto the gameplay, Its quite fun. 3 different characters to control, 3 different control schemes, and switching between them is so fluid too! Its not like each time you complete a level, and then switch to a different character, you have to take a few minutes to re-familiarize yourself with the character, no, you just up and go!
The multiplayer for this game is so much fun too, its almost half the reason you would buy the game. Several different levels from the game taken for 3 different types of game modes makes for one hell of a fun time. Speed racing, Treasure finding, Bot battling, whichever one you pick will be sure to be lots of fun.
8: Super Smash Bros series
Im going to do these 3 games as one since I love them all equally.
Boy, what cant be said about these games? Bringing in an all-star Nintendo cast to fight it out was pretty much every Nintendo fanboy's dream when the first one came out, and I was no different. Since then though, the games have only gotten better. Items, game modes, multiplayer, single player, more characters, all of it is just so much fun. Melee improved upon SSB tenfold, and Brawl improved upon Melee 100fold. This makes me excited for the next Smash Bros game, to see how they are going to improve it even more.
7: Mario Kart: Double Dash!!
It was close between this and Mario Kart Wii/64, but this one pulls slightly ahead. This one has something that no other Mario Kart game has. In fact, 2 things: Special Items and co-op. The special items were what really made this game so much fun and erratic: everything from giant bananas, to yoshi eggs, to fireballs, to chain chomps, things were so damn hectic that nobody ever knew who was gonna get first until it was over. Then there was the fact that 2 players could co-op on one kart. If the two players were in sync with each other, it was like the best thing ever, and they became unstoppable. Even if they werent though, it was still lots of fun, just because they were doing so bad. Its that "so bad its good" sort of thing. All in all, one crazy fun multiplayer game.
6. Super Mario World
First game ive ever played, and I still love it to this day. It was the first game to feature Yoshi too, which made it all the better, as well as the infamous koopa kids, and finally Bowser's clown copter. So many things were introduced in this game which are still used to this day, just shows how influential this game was to the Mario franchise. And for good reason too, because this game was and is so much damn fun. Secret switch palaces, a multitude of hidden levels, several different areas, this game had it all. From cape feathers to P-balloons, from fire flowers to invincibility stars, from colored yoshi to colored yoshi, there wasnt anything this game couldnt do. I mean, it even had a secret power up level for god sakes! I mean, my favorite Yoshi is still blue Yoshi from this particular game, because that fucker could fly whenever he grabbed a shell of any color. Who wants to stomp sand or blow fireballs when you can fucking fly? This game even had freaking replay value! Who could forget about the incredibly hard Star Road? I know I havent. Hot damn this game was just so much fun.
5. Donkey Kong 64
This was the first N64 game I played, in fact, I got a N64 box set that came with this game. And boy did it have me playing for hours on end. Collecting bananas, killing kremlins, solving puzzles, shooting bees, taking pictures of fairies, this game kept you busy no matter where you went. 5 different kongs to play as, so many different abilities to use. Everything ranging from special powers, to instruments, to guns, killing kremlins was never as much fun as this. And collecting golden bananas wasnt just fun because of the puzzles you had to complete to get them, it was fun just getting them because whenever you got a golden banana, whichever kong you collected it with would do a little dance afterward. It was always so entertaining. And the thing about this game was that you were never without a new powerup. You literally got at least one new powerup for every new area you went to, whether it was something entirely new, like a new special power, or just an upgrade to a former power, like the butt slam, you always had some new technique to battle the baddies. It was also just funny. I mean, watching Tiny beat the shit out of a kremlin at least twice her size was always hilarious to watch.
4. Super Monkey Ball 2
Another game I really admire for the soundtrack. Man, SEGA really knows music. Anyway, this game was as ridiculous as it was fun. In single player, you were a monkey who was encased in this super ball, rolling around on these different levels getting to the goal area, while also collecting bananas. This game also became challenging fast, but it was that good kind of challenging, the one that made you want to keep trying over and over till you succeeded. To this day, I still havent fully completed story mode, but I keep trying. This game really shines in party mode though. It has 12 different party games to play, and theyre all pretty fun to play. Its really diverse party games too, ranging from sport games like tennis and billiards, to racing, canoeing, brawling, and shootout. If you havent played this game, or any of the games in the series, try one out, you wont regret it.
3. Kirby: Super Star Ultra
Cant believe it took me this long to mention a Kirby game, whats wrong with me? Anyways, the remake of the classic SNES game is every bit as good as the original, and more. It graphically updates everything, adds more game modes, as well as powers(of course), and never takes away anything that the original didnt have. Even gives Meta Knight his own game mode.
2. Gauntlet: Dark Legacy
A fantastic multiplayer game. Play as one of 8 characters, with 8 more just waiting to be unlocked. Tons of items to use, many different areas to explore, lots of baddies to kill. Its a hard game too, but so much fun, especially in multiplayer.
1. Kirby 64: The Crystal Shards
The first every Kirby game that I played, and the reason that I am such a hardcore fan of Kirby. It took all the classic Kirby elements, and stacked upon them. You could now combine powers to create much better powers, and you had a plethora of powers to explore and combine to kill baddies with. Several different worlds to explore, each with their own vastly different theme, and a hidden final boss too.
Gah, ran out of space on the last 3, wish I couldve said more on #1 too.