Hi there... I think the polygon thing you saw there is the Eclipse demo, by Eclipse ofcourse, that was supposed to be a game engine. It can be found under that name at the No Fragments archive. Atari made a lot of advertising showing screenshots of this demo. I remember that leaflet and I think I have it somewhere laying around too... The ST-Format was big in announcing "coming" Falcon titles... just as "Space Junk" or "Ragnarök"... Overall there were about 20 or 30 commercial games (and I don´t speak about shareware titles) officially released on the Falcon:
Ishar 3 + Ishar 3 CD
Robinsons Requiem + Robinsons Requiem CD
Road Riot 4WD
Pinball Dreams (later released for free)
Platonix (Falcon Version)
Operation Skuum (later released for free)
Sheer Agony + Sheer Agony CD (later released for free)
Aazhom Krypth (later released for free)
Crown Of Creation
Let´s Play Shanghai
...and a game by Absence made for WBW... but damn, I have some brain break... I really remember it´s title... it´s a puzzler, too ...
A few ones like Raiden were never officially released as they were buggy...
Undercover Magascene - observing the Atari scene since 1993