What did you think of Atari's 7800 Pro System?
This was originally slated to be released in June 1984, but because of the effects of the video game crash of '83 still being afresh (and also the July 2, 1984 sell-off of Atari by Warner Bros. to the late Jack Tramiel), the system was delayed until 1986 when it was released in response to strong Christmas 1985 season sales of the 2600.
When the 7800 finally did get released, instead of there being all new launch-title games for '86-'87, they decided to release it with all the launch titles intended for the system's original 1984 launch. This is because all the launch titles for the 7800 were programmed in 1983-84, and also explains why you see a 1984 copyright for Atari in the game's ROMs.
The 7800 has backward capability with the 2600 library, although not all 2600 titles will work on the 7800, including Coleco's Time Pilot.
7800 launch titles in 1984 included:
CX7801 - Centipede
CX7802 - 3D Asteroids
CX7803 - Dig Dug
CX7804 - Food Fight
CX7805 - Galaga
CX7806 - Joust
CX7807 - Ms. Pac-Man
CX7808 - Pole Position II (included with 7800 console)
CX7809 - Robotron: 2084
CX7810 - Xevious
CX7811 - Desert Falcon
CX7812 - Millipede (cancelled)
CX7813 - Jr. Pac-Man (cancelled)
CX7814 - Track & Field (cancelled)
CX7815 - Ballblazer
CX7816 - Rescue on Fractalus! (prototype only)
CX7817 - Crystal Castles (cancelled)
CX7818 - Moon Patrol (cancelled)