Impressions specialized in historical strategy games and is best known for its City Building Series, which include Caesar, Pharaoh, Zeus: Master of Olympus, and Emperor: Rise of the Middle Kingdom.
[2] Mike Ryder, former president of Sierra Entertainment, forced a change in management in October 2001, during development of Lords of the Realm III.
Lords III became Impressions's final game, and was released to mediocre reviews in March 2004.
Many members of the studio moved on to form Tilted Mill Entertainment.
Former notable employees of Impressions include Chris Beatrice and Peter Haffenreffer, co-founders of Tilted Mill Entertainment and Simon Bradbury, founder of Firefly Studios.