On July 1, 2020, Kongregate announced the discontinuation of submissions as it prepared for the end-of-life for Adobe Flash Player by December 31, 2020, during which time the software required to run most of its games would be disabled in some browsers.
On July 1, 2020, Kongregate halted submissions while preparing to remove Adobe Flash Player on December 31, 2020. This period would see many of its games inaccessible in some browsers because of software issues.