| Colecovision cart. |  Keystone Kapers | 1984 | Activision, Inc. Mountain View, CA, USA 47875 |
| Colecovision cart. | King & Balloon Hb | 2018 | Team Pixelboy |
| Colecovision cart. | King's Valley Hb | 2012 | Team Pixelboy |
| Colecovision cart. | Klondike Solitaire v1.0 Hb | 2021 | Under4Mhz |
| Colecovision cart. | Knight Lore Hb | 2016 | Team Pixelboy |
| Colecovision cart. | Knightmare Hb | 2015 | Team Pixelboy |
| Colecovision cart. | Kobashi Hb | 2010 | CollectorVision Games |
| Colecovision cart. | Konami's Ping-Pong Hb | 2011 | Team Pixelboy |
| Colecovision cart. | Kralizec Tetris Hb | 2017 | Team Pixelboy |
| Colecovision cart. | Kung-Fu Master Hb | 2016 | CollectorVision Games |
| Colecovision cart. | Lady Bug Model 2433 | 1982 | Coleco Industries, Inc. Amsterdam, NY, USA |
| Colecovision cart. | Learning with Leeper | 1983 | Sierra On-Line, Inc. USA 20626 |
| Colecovision cart. | Lift Hb | 2022 | Inufuto |
| Colecovision cart. | Linking Logic | 1984 | SSC |
| Colecovision cart. | Logic Levels | 1984 | SSC |
| Colecovision cart. | Looping | 1983 | Coleco Industries, Inc. Amsterdam, NY, USA |
| Colecovision cart. | M*A*S*H | 1983 | Fox Video Games, Inc. 20th Century Fox Santa Clara, CA, USA |
| Colecovision cart. | Magical Tree Hb | 2006 | Opcode Games |
| Colecovision cart. | Mahjong Solitaire v1.0 Hb | 2021 | Under4Mhz |
| Colecovision cart. | Majikazo Hb | 2016 | Team Pixelboy |
| Colecovision cart. | Mappy Hb | 2016 | Team Pixelboy |
| Colecovision cart. | Mario Bros. Hb | 2009 | CollectorVision Games |
| Colecovision cart. |  Masters of the Universe - The Power of He-Man | 1984 | Mattel Electronics Mattel, Inc. |
| Colecovision cart. | Maze Maniac Hb | 2006 | Boyer, Charles-Mathieu |
| Colecovision cart. | Mazy Hb | 2022 | Inufuto |
| Colecovision cart. | Mecha 9 Hb | 2016 | Team Pixelboy |
| Colecovision cart. | Memory Manor | 1984 | SSC |
| Colecovision cart. | Meteoric Shower | 1983 | Coleco Industries, Inc. Amsterdam, NY, USA |
| Colecovision cart. | Mikie Hb | 2021 | Team Pixelboy |
| Colecovision cart. | Miner 2049er P | 1983 | Micro Fun |
| Colecovision cart. | Minesweeper v1.0 Hb | 2021 | Under4Mhz |
| Colecovision cart. | Missle Strike Hb | 2021 | AnalogKid |
| Colecovision cart. | Module Man Hb | 2013 | Team Pixelboy |
| Colecovision cart. | Monaco GP Hb | 2021 | Team Pixelboy |
| Colecovision cart. | Monkey Academy | 1984 | Coleco Industries, Inc. Amsterdam, NY, USA |
| Colecovision cart. | Montezuma's Revenge | 1984 | Parker Bros. Beverly, MA, USA |
| Colecovision cart. | Moonsweeper | 1983 | Imagic, Inc. Los Gatos, CA, USA |
| Colecovision cart. | Mopiranger Hb | 2012 | Team Pixelboy |
| Colecovision cart. | Motocross Racer | 1984 | Xonox, Inc. Hopkins, MN, USA |
| Colecovision cart. | Mountain King | 1984 | Sunrise Soft., Inc. Dallas, TX, USA |
