Haven't played it so don't really know and so this could be stupid but I'm thinking of Pikmin here.

7.   Super Mario Galaxy 2

What can I say, other than this expanded greatly on the original, while bringing Yoshi back. Everything I said about the first game applies here. Because this is a sequel a lot of the "tutorial" levels are thrown out, and this game just starts off at full blast and never lets up. A lot of people prefer Portal 2 to Portal for this very reason. That's about all I have. Read SMG's entry for further information. 

6.   Mass Effect 2

Mass Effect 2 streamlined Mass Effect's gameplay, by taking out the clunky menu system. From the beginning Mass Effect 2's storyline is interesting, and compelling. The game opens up with the main character dying, and then being brought back to life, by a mortal enemy. Said mortal enemy wants the main character to put together a team for a suicide mission. Everything you do in this game determines whether or not your suicide mission is successful. Several supporting cast members either end their character arcs dying for the mission, or rising above and living, depending on what you did through the game. Almost all of these supporting cast members are written perfectly, and are genuinely interesting. We have, a mad scientist responsible for genocide, trying to make up for his past mistakes, an ex-cop gone vigilante, a dying assassin, two science experiments gone wrong, a hivemind AI robot, and a girl who's entire species has huge immunodeficiency problems. Mass Effect 2 makes this spot for it's dynamic choice/consequence system that remembers everything you did, including your save file from the original game. 

5.   Dark Souls

In most games dying doesn't mean much other than loading up your save file, and trying again. The Souls series brilliantly changes all that by constantly saving for you, and forcing you to play on a single save file. Dying once will make you drop all your XP and Money in a pool of blood. If you can get back to your old corpse before dying a second time you get your experience and money back. Dying twice in a row means you lose all your hard work since your last level up. This adds a very real element of consequence to the game, that most games these days are lacking. Add in an online element that allows other players to hunt you down, or help you out, and the tension becomes very real. Dark Souls is often billed as a hard game, but it isn't hard so much as it forces you to pay attention. Carefully probing a new area, while well stocked with supplies, and summoning other players for boss fights will let almost anyone beat this game. Dark Souls is an open world game ala Metroidvania titles, meaning everything is interconnected, and there are shortcuts abound. The story of Dark Souls isn't told in game, but rather in the lore written on items. I'm always enjoyed this method of storytelling, because it let's the player play the part of detective instead of being told outright how the game's story goes. 

4.   Final Fantasy VI

Many people credit Final Fantasy VII as the best game in the series, but FFVI does almost everything both before, an better than FFVII. The active time battle system that adds tension to turn based combat was there first. Epic cutscenes like the opera scene were done with excellent spritework, that holds up better than FFVII's CGI. There were over ten unique playable characters each with their own story arcs and questlines. The crystal leveling system allowed you to give any character whatever moves or stats you wanted. Most games threaten to end the world, if you don't defeat the bad guys, but FFVI actually does end the world halfway through the game. Oh and did I mention you can suplex a ghost train in this game? 

That looks quite interesting. And if I read the internet right it is turn-based, which I like more. I may look some Youtube-gameplay videos and consider getting it.

#40 The Legeng of Zelda: A Link to the Past - This game got a fantastic overworld with tons of stuff to find and fun fast-paced combat. The dungeons don't have particularly complex puzzles, but they're intrincate and well designed. I know people will think that it's sacrilege that I put ALTTP below other Zelda games that I'll mention later :P

#39 ICO - Ueda really knows how make you get dem feelings, this game's ending made me cry. The game is relatively short but it has nice puzzles and good level design, with many of the areas being interconnected in some way, like, there were many times when I thought "oh, so these two areas were actually connected".

#38 The Legend of Zelda: Link's Awakening DX - One of the most unique Zelda games, especially in terms of setting and story, as it doesn't feature Ganon, Zelda or Hyrule or anything related to them. its ending made me feel really sad. The dungeons are well designed and I think the sidescrolling sections are a nice touch. I also like how dense its overworld feels.

#37 Jak & Daxter: The Precursor Legacy - One of my favorite 3D platformers, I loved the freedom of exploration and really enjoyed the game's missions and level design, The Lost Precursor City is particularly amazing.

#36 Luigi's Mansion: Dark Moon - I love this game's atmosphere.  The mansions and the puzzles in them are so very well designed and I also like how each mansion has a different theme.

#35 Final Fantasy Tactics: The War of the Lions - I love this game's story and dialogue direction and I think they did a great job  with the translation in the PSP version (which is the version I played and has a different translation to the PS1 version). The gameplay is also great, with a very deep job system.

#34 Paper Mario - A great adventure with charming party members and a very fun turn-based battle system, where timing is actually important to deal more damage. I also love its art-style, which has aged better than most N64 games.

#33 Tales of Symphonia - I really liked this game's characters and the interactions between them. One aspect where this game shines are the dungeons, which are particularly well made, especially for j-rpg standards. The game's plot was kinda generic and but I still found it engaging enough.

#32 Age of Empires II: The Age of Kings/The Conquerors Expansion - This was one of the first video games I ever played and it's the one that I've played the most (I've installed it in every computer I've had). I love the fast-paced gameplay and how all the civilizations feel very different from each other, also, its single-player campaigns are so incredibly amazing.

#31 Pokémon HeartGold - My 2nd favorite Pokémon game, I love the atmosphere of the Johto region and that you visit Kanto after beating the champion (which is one of my favorite aspects of the 2nd gen of pokémon games). The game is just so content-filled, with tons of things to do in the post-game aside from the typical multiplayer stuff.

Correct.

Well, cheating and using Internet I say Freedom Force. Feel free to ignore this guess if anyone else can guess it without cheating.

My last game before entering the TOP 3 is Fire Emblem: Awakening. Flilix had it right.

Fire Emblem is a great working series, with a gameplay I generally like. Awakening just does this mechanics so right and so fulfilling. And at the same time looks pretty great and has funny dialogue. It was just a blast to play it.

While the gameplay was enticing the story and cutscenes kept the play entertaining, not that you always do the same. Also I played multiple savegames to try out different things (for marriages for instance) and to play one casual playthrough and after I managed a level followed up with the playthrough with permadeath for advanced challenge.

This is one of the games that made the 3DS such an great gaming device. I'm pretty interested if Switch can follow up on this. The start indeed is good.

Wikipedia, MobyGames, OGDB, IGDB

https://www.youtube.com/watch?v=JvupmEk1peE

So many games.

Yes, Valkyria Chronicles is turn-based, and an excellent game in general in my opinion. It's also very easy to find these days as its available on Steam and PS4 as well.