Atari Inc. was a U.S.-based video game company founded in 1972. While not the first video game developer, they helped popularize the business in the '70s with smash hits like Pong and Asteroids, alongside the immensely successful Atari 2600 game system. They had a close relation with Namco, and released many Pac-Man games in various formats.
Atari's most well known relation to Pac-Man is the infamous Atari 2600 version, which despite being a massive success, is considered to be one of the worst games of its time in retrospect.
Atari owned the exclusive U.S. rights for console ports of Pac-Man up until 1990, leading to them porting it to nearly every system imaginable, even ones that weren't their own. They took heavy legal action upon any companies who released unauthorized Pac-Man cartridges, most notably with K.C. Munchkin.
In the 2000s, Infogrames (a French company who bought out the entire Atari brand) silently released two completely original Pac-Man games for PC - Pac-Man All-Stars and Ms. Pac-Man: Quest for the Golden Maze - which were both met with lukewarm critical reception. Atari also published the arcade version of Pac-Mania in North America.
These are all the ports of Pac-Man games that Atari (and its sister company Tengen) have developed, sorted by console.
- Apple II - Pac-Man, Ms. Pac-Man
- Atari 2600 - Pac-Man, Ms. Pac-Man, Jr. Pac-Man
- Atari 5200/400/800/XL/XE - Pac-Man, Ms. Pac-Man, Jr. Pac-Man (cancelled), Super Pac-Man (cancelled), "Puffer" Ms. Pac-Man (cancelled)**
- Atari 7800 - Ms. Pac-Man
- Atari Lynx - Ms. Pac-Man, Pac-Land
- ColecoVision - Pac-Man (cancelled)
- Commodore 64 - Pac-Man, Ms. Pac-Man
- Commodore VIC-20 - Pac-Man, Ms. Pac-Man
- IBM PC - Pac-Man, Ms. Pac-Man
- Intellivision - Pac-Man
- NES (Tengen) - Pac-Man, Ms. Pac-Man, Pac-Mania
- Sega Genesis (Tengen) - Ms. Pac-Man, Pac-Mania
- Sega Master System (Tengen) - Ms. Pac-Man
- SNES (Tengen) - Ms. Pac-Man
- TI-99/4A - Pac-Man, Ms. Pac-Man
**This was a special version of Ms. Pac-Man using a bicycle peripheral.