 Multiple versions of the game were created for the FOCAL and FOCAL @-@ 69 languages , but in 1973 David H. Ahl released BASIC Computer Games , a book of games written in the BASIC programming language and the first million @-@ selling computer book , which included his version of The Sumer Game . This expanded version of the game , titled Hamurabi , quickly became the more prominent version due to the popularity of both the book and the programming language . Hamurabi influenced many later strategy and simulation games and is also an antecedent to the city @-@ building genre . 
