Great game! I like the way obstacles are randomized and added to the board. I noticed, though, that it's a bit unintuitive that the dice are an obstacle, not a power-up. Also, I wasn't able to get a higher score than 80. The game might be more addicting with a few power-ups to keep you playing for longer (eg. +5 points, boost to left-right speed, etc.). You could also try making the board six tiles wide, which might make more sense for a game where your life is in the hands (... or sides???) of a six-sided dice.
The game sticks to one theme well, good job on that. The music and sound effects in this game are also great. I might enjoy the game more if the music stopped when you lost, then started back up at the beginning each time you tried again. That might make it more satisfying to get farther in the level.
Good job! I'm glad I got to play this game.