Very cool!
I think this is a great game, especially the Design, which I think is probably loved - amongst the Pixel-Art community (which I'm not really a supporter of, I prefer "normal" artstyles, but this is cool too). The setting kind of reminds me of the Dino Game from chrome, and I'm a big fan of the Minimalistic Design, using only two colors.
Sadly, there's a few things that I'm not really fanning for. I think there should be more explanation on the buttons, and maybe a sound effect when you can't press them, I was sitting there not knowing what to do (until I looked at the description, which was kind of hard to read though). Cactuses aren't moving and to my eyes, the road seems to only be shifting between two costumes.
However, I think it's a grat game with a huge potential, which could be maxed out by adding more obstacles, clear instructions (for dummies like me), and fix the minor things (In particular the cacti). I hope you can comprehend my rating!
Sincerely,
MirageDev / Mirau