I'm gonna guess that it was this. Mark Richards was the evening jock at KFI in Los Angeles, which did a block of games from 6-9 p.m. beginning in August of 1985.
Apparently Mark had done similar things as early as 1982 at KOGO in San Diego, then at KGIL in San Fernando before going to KFI.
By April of 1986, it was over at KFI, but Mark was syndicating. It was not related to Walt Sabo's "Game Zone" at KFRC (in fact, in this Radio & Records article, Mark says he tried to make some suggestions to KFRC and was blown off).
The KFRC hosts were Dave Sholin, Chuck Browning and Jim Bridges. None of them worked in Portland, so it was likely a similar voice.
I can't find any mention of KKSN doing a game block, so I can't tell who it might have been. I found this interview/profile of Mark Richards, which mentions that he moved to Las Vegas in 1990 and did the game show thing on KENO-AM, but I can't find anything that suggests he was in Portland in between KFI and that.
This week, Ira spoke with Mark Richards, who hosted “Starcade,” cable television’s first original game show.
iraseverythingbagel.com
There really weren't. The only examples I can find in a pretty exhaustive search of the trades are Mark Richards at KOGO/KGIL and KFI and the KFRC Game Zone.
Given what happened to the two major stations to try it (KFRC with a 1.5 and in 23rd place in the summer book, KFI with a 1.6 and in 22nd place in the fall book), I'm betting there were few takers.
