I kinda like what you're trying to do here, although all in all it was confusing and frustrating. I get that that's the point of the game, but this is a bit much. I couldn't move at all [i tried every control and pressing everything i could press] and it took way too much time to load, like there was something more than just repeatedly falling to your death.
Again, I get what you're trying to go... it's just not coming across.

First impression: This game takes way too long to load. It's over 30 seconds from the time the page loads until the time I can click the "play" button. What's it loading? A big open world with lots of animated actors? Nope, game has just some simple unanimated 2d graphics. What is it that the game taking so long to load up? I have no idea.

Start the game. I see a black figure in a red cape fall to the ground and I get a game over screen. Click "Play Again" and see it again. And again and again. The instructions in the posted description say to use space bar and right arrow so I try these, along with every other key on the keyboard. Nothing seems to stop this figure from hitting the ground and giving me a game over.

Then I figure out that after clicking on the game over dialog and the game starting again, I have to click on the game screen to transfer the focus back there. So I do that and sure enough now the space bar and right arrow work as described. Why would the focus not be transferred automatically? Seems an unnecessary step for the player.

Essentially this is a Flappy Bird type of game, except that you get to control the forward movement.

Meh.