Well polished! The pixelated cards are very well done. I can think of some polish tweaks that would be nice, but to be honest... I'm not a fan of the gameplay itself. I like when I'm able to make choices, so even adding a little bit of variety in the mechanics would help - such as having to choose between two different cards to play, or allowing us the ability to add bonuses to our card to help us win. But I do like the cohesiveness of your theme, your visuals, and the sound design.

Very simple, easy to understand, good game, only feedback i have is if you want it to look more polished you should stay somewhat consistent with the artstyle, the cute little cowboys are outline but nothing else is and the cards are way more detailed than anything else