Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
PopTop Software was founded by video game programmer and designer Phil Steinmeyer in 1993. On July 24, 2000, Take-Two Interactive announced that it had acquired PopTop Software. The deal saw a transaction of 559,100 shares in Take-Two Interactive, valued at an estimated US$5.8 million. On January 25, 2005, Take-Two Interactive announced the opening of publishing label 2K, which would henceforth manage their development studios, including PopTop Software.
Steinmeyer left PopTop Software in late 2004 and founded New Crayon Games, which later developed Bonnie's Bookstore, in May 2005. On March 7, 2006, it was announced that PopTop Software's operations had been merged into Firaxis Games, another 2K studio.