It's alright, it's a start. Needs better tutorial and better visual cues for stuff.
My general feedback would be - it needs A LOT of visuals. Generally gambling games are not very fun unless they add flair - the suspense of the roulette wheel, wonky physics of the falling dice, spinning slots and fireworks of getting a 777 - that's what fuels the gambling addiction. Without it - it's pretty mindless, at least in my opinion.
It's an alright start, but needs A LOT more meat on the bone.