“A Vampyre Story” was at least partially made with Panda3D, but you’d have to ask the producers if you’re allowed to use their title for advertising.
Quick, rough idea:
how about a contest for modellers?
we make a very simple FPS sample (only running around. something like roaming ralph without ralph) and attract designers to model some nice environments. prize would be a small amount of money (as for my part i’d be proud to contribute 5€) and a credit under the screenshots which we would show off.