Alright, so I thought i knew with what equipment they worked but I can't find the source anymore, anyways the company was (is technically) called "WhoopeeCamp and was set up in 1996 -1997 by Tokuro Fujiwara, They created the Tomba games for on the PS1 and Extermination, until they went defunct.
Although Tokuro is now woroking as a freelancer under the WhoopeeCamp company again with the latest game being the Ghost and Goblins remaster.
They worked together with Deepspace to create Extermination.