They are untested currently as I do not have my Atari with me, but I could not find any reason why they should not work, they were pretty sturdy when they were made.

Games include:

Skiing (label is coming off slightly, as noted in the last picture) (1980, Activision)

Demon Attack (1982, IMAGIC)

Cosmic Ark (1982, IMAGIC)

Video Pinball (1981, Atari, CX2648)

Kangaroo (1987, Atari)

RealSports Football (1982)

RealSports Volleyball (1982)

Pac-Man (1981, Atari/Namco)

Game Program: Combat (CX-2601) 

1-5 Tank, 6-9 Table Pong, 10-14 Invisible Tank

15-20 Biplane

21-27 Jet-Fighter