Flash games are simple, browser-based video games that were created using the Adobe Flash platform. They became popular in the early 2000s due to their accessibility, allowing players to enjoy games without needing to download or install software. These games often feature straightforward graphics and gameplay, making them easy to pick up and play. Many Flash games are free to play and cover a wide range of genres, including puzzles, action, and strategy. However, as technology evolved and Adobe Flash was phased out in 2020, many of these games became less accessible, leading to a decline in their popularity.