These are as usual bootleg games do.
1st video, 1st game(Two Turn Pair) : A traditional Pairing Mahjong.
1st video, 2nd game(Face Tetris) : This one is sure weird. This remembers me Columns by Sega.
2nd video, 1st game(Jewelry) : Frogger with jewel pontoons and a larva?
2nd video, 2nd game(Piano) : This is NOT a game - A piano simulator with is played with 4 fingers simultaneously.
2nd video, 3rd game(Sky Shot) : Just a simple boulder-breaking SHMUP, scored by how far can you go. But why the plane is P-38?
2nd video, 4th game(Picture Collect) : A 9-piece-puzzle with Adventure Island sprites.
2nd video, 5th game(Guess Numbers) : As the name says.
2nd video, 6th game(Chinese Chess) : Well? Anyway, this one isn't the same game made by Sachen which has a same title.
2nd video, 7th game(Punch Sprite) : Whack-A-Mole with SMB sprites. Looks so boring.
2nd video, 8th game(Black Jack) : Well again?
2nd video, 9th game(Soha Poker) : Just a classic video poker.
2nd video, 10th game(Pair Memory) : As the name says.
2nd video, 11th game(Magic Sound) : A sound emulator?