With Greed Corp., it's a matter of less being more. At first glance, the game doesn't look or really sound like much. This is, I'm guessing, by design. You have something to look at and listen to, but it's really just there for decoration. It manages to hit the sweet spot of being good enough to grab and hold your attention, but without becoming too distracting.
Levels resemble a board game more than a level in a strategy game, but the presentation is incredibly effective at communicating the game's core mechanics. Hexes feature small details like trees and snow covered mountains, but those are really just decoration. The real crux of the game is the strategy. Visuals look great, but are really just a way to know what's going on.