Besides animation series, movies and toys, video games also played an important role in Transformers franchise.
Since 1985, Transformers have been an annual fixture the way FIFA Soccer was in mid 90s.
But it was 2001 which happened to the year Sony Playstation or PS2 came about that it finally achieved its breakthrough with its superb 3D and CG animation graphics, powerful music and special effects that gave fans the feeling like as though they were part of the animation and movies.
Since then, there have been at least 2-3 games yearly.
Not just the main story but perspective gameplay from Autobots, Decepticons and human allies.