The late 1970′s saw the start of video game craze with more and more households getting computer savvy. As a natural corollary, people started writing their own games for the home computers. These programming hobbyists traded and sold these home-grown games in local markets.
Other changes in the 1970′s were home gaming consoles which used game cartridges. That meant the people could collect games cartridges for one base unit instead of having bulky game console systems.