Steel Talons is a 3D arcade game released in 1991 by Atari Games. It uses 3D plogonal sprites to make the game. Out of all the ports out there, the Atari 7800 port was the one that never saw the light of day. Only 1 screenshot is known to exist, & it seems that the game's code may never be released to the public. The 1 screenshot appears in Laird's Lair's unreleased Atari 7800 video(skip to 1:35 for it). The reason for its cancelation is unknown, though I could speculate it may be due to the Atari 7800 failing to be a succesfull system, or it was too advanced for the system.