A well used inside-keyboard from a Atari Joystick!
When our Atari Joysticks broke, I opened them up, taped the keyboard inside and
used the buttons as a joystick. I play Mountain King with each thumb (of each
hand). This has outlasted the Atari Joystick by many years! In Mountain
King, I hold the Up button and push the Left button to jump up+left, then I let
go of the Left button when arriving the entrance to the hidden world. Ever since
I've learned to navigate Mountain King this way, I've never gone back to using a
normal joystick! There are other games I use this for and I'm thinking of making
plastic overlays for each games and put them in.
In some other games, holding more then one button creates malfunctions (such
as in Ms. Pacman and others). Or makes it more difficult to navigate such as in
Adventure - adding a new level of difficulty!
We used this to play a number of games begining from the late 1980s, and yes, it still works!
Sega Genesis controllers (each are colored differently but work the same).
Sometimes we used this controller because they create one ladder that can be
themporary removed by pushing the C button. Remember that this works in both
ports of the Atari, but is in different locations for the right port and left
port.(Only one port will allow you to move around)