Would not have noticed the sprites changing and how the game was related to the theme had I not read your reply to frodewin and then actually looking at the sprites really closely. I did use the same interpretation in one of my minigames though, so of course I approve :).
The bindings are a bit unfortunate, as the keys W A S D are all bound to something within my browser (d for example closes the current tab, and without thinking that was the first button I pressed after opening the game). I guess it was a ploy to get me to play and win as Trump! It's pretty barebones at the moment, but it is a complete game and I could see myself getting a laugh out of it if I had someone to play with.