He now publishes his games through other companies, such as Ravensburger and Days of Wonder.
The game was published by Ravensburger in 1981 and marketed for ten years, winning critical acclaim.
Ravensburger has published a tabletop (non-electronic) board game adaptation of Farmerama, playable by one to four players.
Her illustrations have been commissioned and licensed from companies such as, Innovative Kids, Nickelodeon, Penguin Putnam, Ravensburger, Rocky Mt. Elk Foundation, Scholastic, SunsOut and the U.S.D.A..
Die Wächter by John Christopher, published by Ravensburger Verlag, ISBN 978-3-473-58027-9.
Alongside his work as an artist, Ivan has been active as an inventor of games, puzzles, toys, educational aids and programmes which have been commercial successes under major manufacturers such as Hasbro, Pressman, Mattel, Peter Pan, Spears, Ravensburger, Childcraft, Invicta and many others.