Admittedly, I'm considering this discussion in the context of
another topic started by this account in which they asked if AAA caliber, 3D FPS games could be made in GM:S.
With this in mind,
@Nocturne, imagine either of these two tech demos being shown at something like E3 coming out of a studio like Rockstar. Would people react with anything but disappointment? Also, the developer in the first video (my favorite of the two) said in the comments that the project took him over 70 hours. Meanwhile, you can download UE4, download the free, Epic Games sponsored, HD, photo realistic resources and plop them down over some in-IDE-produced terrain.
Not saying that you can't make good 3D games in GM:S. You certainly, 100% can. And I won't say trying to make a 3D, AAA caliber, FPS with a one person development team using only GM:S isn't admirable. It is. Just saying that I wouldn't advise it.