An interesting interview right
here.

(This interview with Namco designer Shigeki Toyama first appeared in vol. 0 of STG Gameside (2011). It begins with an account of Toyama’s early history at Namco designing robotics, before turning to his work on some of Namco’s impressive taikan arcade games from the 90s, including
Galaxian3, Prop Cycle, and Point Blank