Consoles :

Atari 2600 (1981)

Atari 5200 (1982)
Emerson Arcadia (1982, "Missile War")

Atari XEGS

Nintendo Game Boy (1991)

Sega Master System (1992, "Arcade Smash Hits")

Atari Lynx (1994)

Nintendo Game Boy (1995, "Asteroids / Missile Command")

Sega Game Gear (1996, "Arcade Classics")

Sega Mega Drive1996, "Arcade Classics")

Sony PlayStation (1996, "Arcade's Greatest Hits - The Atari Collection 1")

Nintendo Super Famicom (1997, "Arcade's Greatest Hits - The Atari Collection 1")

Sega Saturn (1997, "Arcade's Greatest Hits - The Atari Collection 1")

Nintendo Game Boy Colors (1999)

Sony PlayStation (1999) : features updated graphics and 'Classic' and 'Ultimate' game variations.

Sony PlayStation (2001, "Atari Anniversary Edition Redux")

Sega Dreamcast (2001, "Atari Anniversary Edition")

Nintendo Game Boy Advance (2002, "Atari Anniversary Advance")

Sony PlayStation 2 (2004, "Atari Anthology") : appears in both arcade and Atari 2600 forms.

Microsoft XBOX (2004, "Atari Anthology") : appears in both arcade and Atari 2600 forms.

Nintendo DS (2005, "Retro Atari Classics")

Microsoft XBOX 360 (2007, "Xbox live arcade")
Computers :
Atari 800 (1981)
Tandy Color Computer (1981, "Polaris")
Tandy Color Computer (1982, "Defense")
Tandy Color Computer (1982, "Missile Attack")
Commodore C64 (1983)
ZX-Spectrum (1983, "Missile Defence" - Anirog Software)
Acorn Electron (1983, "Missile Control" - Gemini)
BBC B (1983, "Missile Control" - Gemini)
ZX-Spectrum (1983, "Missile Command" - Anirog Software)

VTech Laser-VZ ("Missile Attack")
BBC B ("Missile Strike" - Superior)
Atari ST (1986)
X68000 (1988)
PC [MS Windows, 3.5''] (1993, "Microsoft Arcade")
PC [MS Windows 95] (1995, "Patriot Command", part of "Windows Arcade Pack")
PC [MS Windows, CD-ROM] (1999) : features updated graphics and 'Classic' and 'Ultimate' game variations. This port was re-released in 2002 as part of "Atari Revival".
PC [MS Windows, CD-ROM] (1999, "Atari Arcade hits 1")
PC [MS Windows, CD-ROM] (2001, "Atari Anniversary Edition")
PC [MS Windows, CD-ROM] (2003, "Atari - 80 Classic Games in One!")
Others :
Atari 10 in 1 TV Game (2002 - Jakk's Pacific)
Mobile phone [Motorola T720] (2002)
Nokia N-Gage (2005, "Atari Masterpieces Volume 1")
Atari Flashback 2 (2005)