@somenick Both of them look rather bad and bland.
*- indicates not too important but should be considered
Image A
1) Too many repeated tiles for the outside walls
2) The brown house on the left doesn't showcase the wall thickness making it look 2D and 'fake'
3) The brown houses have too many repeated wall tiles/the tiles look like they were just copy-pasta'd
4) 2-tile doors, 1-tile characters
5) What is the black thing beneath the windows? It looks too intentional if it is a shadow
6*) The windows can be changed up a bit and not look too similar but that's just my opinion.
7) House on the right has an abrupt cut-off of the wall to the roof with no shadows making it look 2D and fake.
8) The flooring, why are you using two sets of hex tiles? They don't match and sharply interchange making it look unnatural.
9*) You have railings but at the stairs, suddenly wall? I'm not sure what your project is but this looks really weird.
10*) Lack of environmental details makes your map look spacious and boring though this would depend on the game itself.
Image B
1*) Might wanna remove that excess cave ceiling unless you're planning to decorate it somehow.
2) It looks like you used dungeon generator.
2a) Walls are bland.
2b) Floors are void.
3*) The spires are glowing yet fading?
4) The fuzz to the top of the screen, where it meets the ceiling, there's a graphical error there.
5*) Try to create some ambiance with your map and not have it look so plain, ie: floor and walls alone.
These are just what I can see from the stills, I hope your whole game isn't like this.
@Cranky Construct I like the wacky-ish yet solid feel of your map. The crystals add a nice ambiance but maybe try adding some varying colors to your carpet and other mono-purple-color objects? This is just something minor and overlooked based on your game though.