| Arcade Video game |  Keno | 1977 | A-1 Supply, Inc. Reno, NV, USA |
| BASIC soft. type-in | Keno | 1977 | 1001001, Inc. |
| Pinball | Kick Off Model 1055 | 1977 | Bally Mfg. Co. Chicago, IL, USA |
| Pinball | Kicker Model 384 | 1977 | Gottlieb & Co., D. Chicago, IL, USA |
| MOS KIM-1 cass. | KIM Goes to the Moon | 1977 | Byte Publications, Inc. |
| MOS KIM-1 cass. | Kim Nim | 1977 | Butterfield, Jim |
| MOS KIM-1 cass. | KIM-1 Demonstration Tape | 1977 | American Institute for Professional Education |
| MOS KIM-1 cass. | Kim-Tac-Toe | 1977 | Edwards, Lew |
| Slot Machine | King of Kings | 1977 | Aruze Corp. Japan |
| Commodore PET cass. | Kingdom P | 1977 | Commodore Business Machines, Inc. |
| SWTPC 6800 soft. | Kingdom P | 1977 | Unknown |
| MOS 6502 CPU soft. | Klingon Capture | 1977 | Technical Systems Consultants, Inc. |
| Intel 8080 CPU soft. | Klingon Capture P | 1977 | Technical Systems Consultants, Inc. |
| Arcade Video game | Laguna Racer Model 622 | 1977 | Midway Mfg. Co. Schiller Park, IL, USA |
| Commodore PET cass. | Lander | 1977 | Commodore Business Machines, Inc. |
| Texas Instruments TI-57 soft. | Leisure Library | 1977 | Texas Instruments |
| IBM 5100 soft. | LEM P | 1977 | Byte Publications, Inc. |
| Intel 8080 CPU soft. | Lewthwaite's Game | 1977 | Intel Corp. |
| Pinball | Liberty Bell Model 467 | 1977 | Williams Mfg. Co. Chicago, IL, USA |
| BASIC soft. type-in | Life | 1977 | Scientific Research Inst. |
| MOS KIM-1 cass. | Life P | 1977 | SEMCO |
| Motorola 6800 CPU soft. | Life P | 1977 | Applied Microcomputer Systems |
| BASIC soft. type-in | Line Up | 1977 | Scientific Research Inst. |
| BASIC soft. type-in | Lost Treasure | 1977 | Personal Soft., Inc. |
| Slot Machine | Low Boy Model 1130 | 1977 | Bally Mfg. Co. Chicago, IL, USA |
| Pinball | Lucky Card Model 415 | 1977 | Gottlieb & Co., D. Chicago, IL, USA |
| Pinball | Lucky Hand Model 415A | 1977 | Gottlieb & Co., D. Chicago, IL, USA |
| PTC SOL-20 cass. | Luftwaffe | 1977 | Hopkins, Ralph |
| UNIVAC I soft. | Lunar - Module | 1977 | Van Pelt, Mike |
| PTC SOL-20 cass. | Lunar - Module P | 1977 | Hopkins, Ralph |
| SWTPC 6800 soft. | Lunar Lander | 1977 | 1001001, Inc. |
| HP-55 soft. | Lunar Lander | 1977 | Personal Programming Center |
| Arcade Video game | M-4 Model 626 | 1977 | Midway Mfg. Co. Schiller Park, IL, USA |
| Arcade Video game | M-79 Ambush | 1977 | Ramtek Corp. Sunnyvale, CA, USA |
| BASIC soft. type-in | Machine/Menace | 1977 | McPheters, Wolfe & Jones |
| UNIVAC I soft. | Mafia | 1977 | Unknown |
| PTC SOL-20 cass. | Mafia P | 1977 | Hopkins, Ralph |
| Pinball | Magic City | 1977 | Bill Port S.A. Madrid, Spain |
| Pinball | Mars Trek | 1977 | Sonic, S.A. Madrid, Spain |
| DEC PDP-11 disk | Master Mind Codemaker | 1977 | Milligan, W. Lloyd |
