I wish the owner of the Keen Dreams IP was as dedicated and resourceful as you are. I have a feeling we've lost that one for good.
In addition to releasing Keen Dreams, he also did a reskin of Hovertank 3D (which I believe is open source) except the plot is replaced with weird racist revenge fantasies about killing refugees.
Then, after being forced off Steam, he seems to spend most of his time creating anonymous email addresses and harassing people.
A company called Night Dive Studios (the current licensee of System Shock) managed to get Keen Dreams back on Steam with reassurances that they had gotten it from Chavez and that he would receive no ongoing income from it, but the game was mysteriously subsequently pulled.
Here are some Twitter threads that speaks to the above. Warning: racial and homophobic slurs, open praise of Hitler, pages and pages of abuse, etc:
https://twitter.com/dosnostalgic/status/1100934501277016065 https://twitter.com/dosnostalgic/status/1140641745920770051 https://twitter.com/dosnostalgic/status/1140726699014971393
Keen Dreams is currently available on Nintendo Switch apparently with Chavez's blessing, but buying that is obviously supporting the above insanity.
For example, Wolfenstein 3D has you killing Nazis which we're already trained to see as valid targets for violence fantasies. Doom's human enemies are "former humans", Quake's human enemies have probes in their brains to make them evil. Sonic the Hedgehog only kills robots, not animals or even Dr. Robotnik who always escapes. But you wouldn't know these things unless you read the manuals or really paid attention. So would a teenage player really feel any different killing non-dehumanized humans instead? Maybe it's just a storm in a teacup when there's outrage at games like this immigrant killing one, Postal 2, or CoD's No Russian level. It all seems kind of perverse to train people that killing is very bad unless it's somebody belonging to a class which has been labeled as "bad" in any superficial way, or a humanoid monster, in which case any amount of gory violence is fine, such as Doom 2016.
That said, children have been playing games of "shoot em up" for many years. At one point it was cowboys and Indians, earlier it would have been whoever the local defender and perceived "bad guy" was.
I have a feeling that this is human nature, and I actually feel that we are far better having our children playing computer games where they are targeting mythical creatures, than playing shoot the Taliban or some such.