Here are some "sweet" videogame-themed gingerbread creations from gingerbread cakes to men to houses... though some are technically castles.

Frankie's gingerbread Mario "? block" cakes:
http://www.digitpress.com/images/store/071201_040.jpg

NES through Wii controllers:
https://www.flickr.com/photos/dscinoc/4035937826

Princess Toadstool's castle:
http://gamersyndrome.com/2014/video-...us-redesigned/

Pac-Man & ghost monsters:
http://www.gingerbreadfun.com/?p=508

Honest-to-God covers made of gingerbread, cream, and candy for calculators and Nintendo DS's:
http://www.gingerbreadfun.com/?p=511
https://web.archive.org/web/20100314...-ds-cover.html

Mega Man (...um, versus?) Mario:
http://kotaku.com/5117633/mega-man-b...ead-brains-out

Tetris (including next piece preview):
https://johngmartin.wordpress.com/20...erbread-house/

L4D2, Zelda's Link, & more:
http://www.toxel.com/inspiration/200...ead-creations/

Super Mario, Pac-Man, Kirby, nVidia, NES, LBP, laptop computer, mobo + add-on cards, classic Mac, L4D, Mega Man's Robot Masters, & more:
http://walyou.com/gingerbread-art-2009/

God, some of those look delicious! I wish I had someone to make awesome gingerbread things like these for me!