Hello! Welcome to Feedback Quest 5!
So there are a few different things I feel I need to address. I'm going to start with the concept itself.
I legitimately like this concept of playing a game on what's supposed to be a small device trying to project a holograph. It helps sell the use of 3D graphics. I could see this being a very useful idea in a bigger game concept.
While playing, I noticed several input bugs going on. For some games, responses were oddly delayed while for others they behaved in weird ways. The biggest issue of this latter issue is in Pac-Man, where if you try to start your turn just as you're moving into the spot, you instead turn around completely. I know from having an arcade unit with the original game that you're supposed to be able to start your turns early to avoid stopping, but this seems to not let that happen. This sort of thing could be bad. Another example of a input bug was on Tetris when trying to turn pieces against an end. Again, the original lets you do so and simply forces the centre of the block to one side. This doesn't happen with your version.
Also, the ability to pause the games and review controls without going to the launcher would be great.
With all of this said, there's one last issue I want to address. It's something I make a point of doing for any game that I think could have this problem: the legality of the game. Even if this is something you offer for free to people, the use of what are copyrighted games and trademarked characters could land you in hot water. As much as I love what this does, I always advise people to be careful with this sort of thing.
As I said before, I could see this being a very useful idea with a bigger game concept. Maybe something where the player has to play an original game on the screen and complete it but has other issues going on similar to what Game & Wario does with the 9-Volt minigames, where you're trying to pretend to be asleep while playing games. This could lead to some fun ideas.
Overall, concept is great and I want more.