To the arcades! Abandoned coin-op conversions
No, I'm not talking about the actual place where you can play coin-ops, and I don't even know if such places still exist. I'm talking about very old games that can be defined as "arcades".
Jumpman Lives! is a classic and need no presentation. Pango is a rip-off (homage?) to the better known Pengo. Volfied takes me back when I used to play games at school (while the teacher wasn't paying attention, of course). Yabog and Popcorn are Breakout/Arkanoid clones.