The music's way too loud. That's the first thing I'm gonna say x)

Aside from that it is a very basic interface to basically play rock paper scissors, not much to say.
With a concept that simple, you could have juiced it up a little, that would have been cool. It doesn't feel very good to win or lose and also since the computer just prints instantly its choice, it often doesn't even look like it just played. I think you could have gone further with the interface and feedbacks.

Simple things, really. The computer's choice sliding in place like a card, screen shaking, little animations for win/lose/tie, sound effects, etc

For that, I recommend you take an interest in the work of Martin Jonasson and Petri Purho who make games with a lot of juice in it, they even have a conference called "Juice it or lose it" Recommend you check it out.

Hope I helped !

It was not fun, but I'm very glad I could play it at all!
Each of the games' existence makes me glad.