| Apple II cass. |  Matching Quiz | 1978 | Innovative Computer |
| Magnavox Odyssey² cart. | Matchmaker! + Buzzword! + Logix! Model AJ9407 | 1978 | Magnavox Co., The Fort Wayne, IN, USA |
| BASIC soft. type-in | Math Dice | 1978 | Workman Publishing NY, USA |
| Hanimex MPT-02 cart. |  Math Fun Model MG-204 | 1978 | Hanimex |
| Handheld game | Math Marvel | 1978 | Texas Instruments |
| Magnavox Odyssey² cart. | Math-a-Magic! + Echo! Model AJ9405 | 1978 | Magnavox Co., The Fort Wayne, IN, USA |
| Phillips Videopac cart. | Mathematician + Echo Model 7 | 1978 | Philips Corp. |
| Atari 2600 cart. | Maze Craze - A Game of Cops 'n Robbers Model CX2635P | 1978 | Atari, Inc. CA, USA |
| Atari 2600 cart. | Maze Craze - A Game of Cops 'n Robbers Model CX2635 | 1978 | Atari, Inc. CA, USA |
| Apple II cass. | Maze Game | 1978 | MUSE Soft. Micro Users Soft. Exchange |
| Atari 2600 cart. | Maze Model 49-75112 | 1978 | Sears Chicago, IL, USA |
| Slot Machine | Medalist Model 1081-6H | 1978 | Bally Mfg. Co. Chicago, IL, USA |
| Bally Astrocade type-in | Melody - For Player Piano | 1978 | Bally Mfg. Co. Chicago, IL, USA |
| Handheld game | Memoquiz | 1978 | MEM Belgium |
| Apple II cass. | Memory Builder + Concentration | 1978 | PDI Program Design, Inc. |
| Apple II cass. | Memory Dump Model AAS0117 | 1978 | Powersoft, Inc. |
| Texas Instruments TI-57 soft. | Memory Flashcards | 1978 | Texas Instruments |
| Pinball | Memory Lane | 1978 | Stern Electronics, Inc. Elk Grove Village, IL, USA |
| Atari 2600 cart. | Memory Match Model 6-99814 | 1978 | Sears Chicago, IL, USA |
| Slot Machine | Merkur Capri | 1978 | ADP Merkur GmbH Gauselmann Group Germany |
| Slot Machine | Merkur Gold | 1978 | ADP Merkur GmbH Gauselmann Group Germany |
| Slot Machine | Merkur Parat | 1978 | ADP Merkur GmbH Gauselmann Group Germany |
| Handheld game | Merlin Model 3200 | 1978 | Parker Bros. Beverly, MA, USA |
| Arcade Video game | Micom Block 4 | 1978 | Hoei International, Inc. Japan |
| Arcade Video game | Micon-Kit | 1978 | SNK Corp. Shin Nihon Kikaku Japan |
| Arcade Video game | Micon-Kit Part II | 1978 | SNK Corp. Shin Nihon Kikaku Japan |
| Arcade Video game | Micon-Kit Part III | 1978 | SNK Corp. Shin Nihon Kikaku Japan |
| Apple I soft. | Microchess P | 1978 | Apple Computer, Inc. |
| TRS-80 cass. | Microchess P | 1978 | Microtronix |
| TRS-80 cass. | MicroChess | 1978 | Micro-Ware, Ltd. |
| Commodore PET cass. | Microchess Ver.2 | 1978 | Microware Systems Corp. |
| Apple II cass. | Microchess Ver.2 | 1978 | Personal Soft., Inc. |
| Apple II 5.25 disk | MicroChess Ver.2 | 1978 | Personal Soft., Inc. |
| Apple II cass. | Microchess Ver.2 | 1978 | Rainbow Computing, Inc. |
| Apple II cass. | microtrivia | 1978 | Speakeasy Soft. |
| Apple II cass. | Microtrivia | 1978 | Softape |
| Pinball | Middle Earth | 1978 | Atari, Inc. CA, USA |
| Motorola 6800 CPU soft. | Mike | 1978 | Johnson, Mike |
| Handheld game | Mind Boggler Model 2626 | 1978 | Mattel Electronics Mattel, Inc. |
| Arcade Video game | Mini Break-Out | 1978 | De Georgio Bruno s.r.l. |
