Same problem,
Black screen during start-up, i have the gauntlet cursor that i can move around while music plays in the background.
if i click in the middle i am sent to a Obsidian Page where it has said to purchase game (" https://eternity.obsidian.net/buy ")
nothing happens if i click else where.
ALT + ENTER was tried
Verifying Integrity of game files was also tried.
uninstall and re-install also tried but no results
i can alt+ tab but when i go back in it is the same.
and i can ALT +F4 as well (closes the game no problem.)
need some assistance.