Yes, I own a
Pegasus Entertainment Series Computer Family Game MT-777DX.

It served me well back in the days. Surprisingly it's not completely moronic, while it had a multi-game cartridge it was nothing idiotic like 1000000 games, rather something around 150. And while there were many weird, hacked and modified versions (Mario on speed, Mario where all the backgrounds were gone, Contra where you always had the best weapon and so on) it still had many of the cool games like Super Mario Bros, Donkey Kong, Contra (my favourite of course), Duck Hunt, Hogan's Alley, Wild Gunman, Baseball, Mappy Land, Bomberman etc.
They lied on the package though, as there was no gun (had to later buy a cheapo one separately for like $3) and I'm still annoyed that the game cart didn't have Dizzy on it.
Jam it back in, in the dark.