Ora and Theo Coster
}} Theo (1928–2019) and Ora (1931–2021) Coster are the founders of Theora Concepts; they were a married Israeli couple and inventors of about 200 games and toys including ''Guess Who?'', ''Magimizer'', ''Zingo!'', and GoPop!. Provided by Wikipedia
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by Coster, Theo
Published 2011
Published 2011
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