Unknown lead platform:
Star Wars: Return of the Jedi - Death Star Battle
First released for Atari 2600 and Atari 8-bit in 1983.
Released for Atari 5200 in February 1984.
Released for ZX Spectrum in 1984 by Sinclair Research.
James Bond 007
Released in 1984 for Atari 2600, Atari 5200, Atari 8-bit, ColecoVision in May 1984.
Released for Commodore 64 and SG-1000 in 1984.
The many simultaneous releases give little clue to this game's lead development platform. One clue, though, is that the Atari 2600 version alone is credited to On Time Software, and all other versions to Parker Brothers. Wikipedia states that On Time Software was the contracted developer, so perhaps they developed the 2600 original, and Parker Brothers ported it to other systems?
Frogger II: ThreeeDeep!
First released for Atari 8-bit on August 1984.
Released for Atari 2600 and Atari 5200 on September 1984.
Released for ColecoVision and Commodore 64 on October 1984.
Released for Apple II and PC on 1984.
Atari 8-bit seems most likely for being first, but it isn't conclusive.
|Title||Lead Platform||Date||Contemporary ports|
|Code Name: Sector||Dedicated console||1977|
|Merlin: The Electronic Wizard||Dedicated handheld||1978|
|Star Wars: The Empire Strikes Back||Atari 2600||1982-7||1983 port to Intellivision|
|G.I. Joe: Cobra Strike||Atari 2600||1983-2|
|Star Wars: Jedi Arena||Atari 2600||1983-2|
|Strawberry Shortcake: Musical Match-Ups||Atari 2600||1983-4|
|Star Wars: Return of the Jedi -
Death Star Battle
|???||1983||1983 releases on Atari 2600 and Atari 8-bit
1984 releases on Atari 5200 and ZX Spectrum
|James Bond 007||???||1984||1984 releases on Atari 8-bit, C64, and various consoles|
|Frogger II: ThreeeDeep!||???||1984||1984 releases on various computers and consoles|
|Montezuma's Revenge||Atari 8-bit||1984-9||1984 ports to Atari 5200 and various computers|
|Montezuma's Revenge||Atari 2600||1984-9||Mobygames lists as a distinct game from the