To understand what a "0.7" build represents in the context of the original Grand Theft Auto, one must travel back to 1995. At DMA Design (the Scottish studio that would later become Rockstar North), a team led by David Jones was hard at work on a concept called Race'n'Chase .
with on-screen touch joysticks and action buttons.
As a "collector's piece," it provides an insight into the development of a classic, as discussed in this YouTube video .