I've made several video game inspired watches lately, take a look if you're interested!
Here's my collection-
Includes: Street Fighter, Metal Gear Solid, Pokemon (2 of them), Goldeneye, Dark Souls and original Super Mario Bros.
I try to make them make as much sense as possible on square screens but I have a moto360 sport (round) so my base designs are always build around that.
There's also a Dr. Mario one just finished: