 It was then that they received a call from Nolan Bushnell, who had heard of their project and wanted to show them his similar project he was working on.Bushnell had also played "Spacewar" during the 1960s and wanted to make an arcade game version of it, but had gone in a different technological direction.He and Ted Dabney had initially started with a US$4,000 Data General Nova computer which they thought would be powerful enough to run multiple simultaneous games of "Spacewar"; when it turned out to not be, they had started investigating replacing the computer hardware with custom-built parts.