The problem is like this. The game is slowed down by the browser. I designed it to play at 30 fps, but in the browser it seems to run at 20 fps average. So, if I assume this 10 fps lost is constant among browsers and clients (very unlikely) and in order to let you play the game the way it was meant, I’m uploading an additional turbo version of the game, published at 40 fps, hoping that it will slow down around 30fps in your system the same way it does in the ones I’ve tested this.
I’ll try to keep updated both versions from now on. The good thing is that all the game assets are the same for both versions, so no double download of everything, and both use the same high scores tables. The bad is that the saved progress of one version will not apply in the other.
You can show a fps counter at the options menu. Drag it anywhere on the screen as shown in the screenshot above.