Group
- Kenzer and Company1
- Kettle of Fish Productions5
- Kettle of Fish productions1
- Kobold Quarterly3
- Kokomo Irregulars1
- Konami Digital Entertainment30
- LEGO Systems, Inc.2
- Lange Games1
- League of Unspeakable Adventure15
- Legends of the Shining Jewel24
- Legio-IX4
- Legion of Heroes25
- Linchipper Enterprises4
- Liquid Car Productions4
- Living World Games/APE Games3
- Living in Nod1
- Lone Wolf Development4
- Lonely Die Press5
- Looney Labs11
- Loosebolt Games2