The development for these games took so long because Gorlin started other games in between—a black hole game and a seaplane game—which proved too ambitious and which he ended up abandoning. During this time, however, he built a lot of tools whose descendants he still uses today.
The creation of these games was delayed because Gorlin concurrently worked on other endeavors—a black hole game and a seaplane game—which proved overly complex and which he later discarded. During this period, however, he built several tools whose descendants he continues to use.