May I add onto this?
3DS: Missing #, J, Q, U, V, X, Z
GameCube: Missing #, Q, X, Y
Mobile: Missing X and Y
Nintendo Switch: Missing #, G, I, J, Q, T, U, V, Z
PlayStation 2: Missing #, J, Q, R, V, W, X, Y
PlayStation 3: Missing #, I, J, K, O, Q, R, V, W, X, Y, Z
PlayStation Vita: Missing #, A, B, F, I, J, K, O, Q, U, V, W, X, Y, Z
Wii: Missing Q, V
Wii-U: Missing #, E, I, J, Q, U, V, X, Z
XBOX 360: Missing D, E, F, H, J, K, O, Q, V, W, X, Y, Z
And that's not counting Other Systems. I won't go into those because many of those don't even have games for every letter. I've started trying to fill in GameCube, but not much luck so far. I guess I just need more patience with playing the games. :T
3DS: Missing #, J, Q, U, V, X, Z
GameCube: Missing #, Q, X, Y
Mobile: Missing X and Y
Nintendo Switch: Missing #, G, I, J, Q, T, U, V, Z
PlayStation 2: Missing #, J, Q, R, V, W, X, Y
PlayStation 3: Missing #, I, J, K, O, Q, R, V, W, X, Y, Z
PlayStation Vita: Missing #, A, B, F, I, J, K, O, Q, U, V, W, X, Y, Z
Wii: Missing Q, V
Wii-U: Missing #, E, I, J, Q, U, V, X, Z
XBOX 360: Missing D, E, F, H, J, K, O, Q, V, W, X, Y, Z
And that's not counting Other Systems. I won't go into those because many of those don't even have games for every letter. I've started trying to fill in GameCube, but not much luck so far. I guess I just need more patience with playing the games. :T