More and new clues:
19. Pixeljunk Racers
13. Pokemon Red/Blue
Hoping to clear up my current hints a bit before I start adding more games.
21) On my "CD shelve" this game takes up nearly an entire row.
Hint 2: Not because the box is quite that large, but because there are several of them.
Hint 3: Most of the boxes are expansions.
Hint 4: It's not Sims game.
20) If the protagonist of this game had been playable in Smash Bros. they could have up to 4 different move sets.
Hint 2: 1 "base" and 3 transformations.
Hint 3: There are already character(s) in Smash Bros. that share a name with the particular protag.
Hint 4: This has been equivalent of a trick question, since this character technically is in Smash, only it's him from the previous entry, and thus he doesn't really have moves relating to this game.
19) While this game is in some ways a return to the basics for this series, the additions it makes to your arsenal are some of the more original.
Hint 2: Includes a new mad villain as well as the classic one.
18) Brings a new meaning to twin-stick controls.
Hint 2: It's not Brothers: A Tale of Two Sons, but control-wise there is a similarity.
Hint 3: You essentially control two characters who are bound by...
17) 2019 2020 2021 2022
Hint 2: Obviously the game has been previously released or it wouldn't be on my list, but these dates can be found on the game's website currently.
Hint 3: The dates are for the expanded version of this game which is coming in early 2022, promise.
20. Hyrule Warriors: Age of Calamity
Apparently I made this set of hints quite tricky, as both #19 and #18 went unguessed. Let's see if it can get a little easier with the next hints.
#17: The Mac OS version of this game (at least) featured an interesting anti-piracy measure where you had to look up letters in the manual.
Hint 2: Once you find the correct letter, you can drink the correct bottle and the door to the next level opens. Drink the wrong one, and die.
Hint 3: This actually mirrors the rest of the game, most bottles are for health, while some take health. You see this by the color of its plume. Obviously though there is no plume in the lettered bottles because that would be too easy to guess.
Hint 4: The levels start down in a grey-coloured dungeon, presumably the place where you were imprisoned, until the switch to the more elaborately decorated red and golden floors of the palace.
#16: Breaking a mirror brings bad luck. Maybe the bad guy in this game shouldn't have broken the mirror.
Hint 2: The bad guy also should've known that the mirror would break in only four pieces, and that they would conveniently end up at the end of as many sinister places.
Hint 3: The first is in a desert, the second on a snowy peak, the third in a lost woods and the fourth in the sky. Guessed by Link_Nines.XBC - The Legend of Zelda: Twilight Princess
#15: This game was named something else where I live due to trademark issues.
Hint 2: Just like this game's predecessor. However that one was called differently. After this game, new games took the real name of the franchise. Guessed by TruckOSaurus - Lylat Wars/Star Fox 64
#14: Beach balls can roll on all sides.
17 is some sort of Roguelike. Is it Nethack or Shiren the Wanderer?
More games to guess:
#17: Elirium 115 (first game).
#16: Time travel in the john.
#15: A shrine can revive your horse, if you managed to kill it. Guessed by drbunnig.
#14: Sorry to keep you waiting.
#13: On the first day man was granted a soul and with it clarity.
16. Day of the Tentacle
14. Grim Fandango