I like the explosions effect and the sound effects of your game. My engine is very basic, its main goal is to be small, fast and simple, the whole game fits in 100kb compressed. I'm not sure if you realized that the goal of the game is to catch the "particle effects when the block is broken" (aka coins). They didn't look enough like coins before for this to be understandable. The size of the blocks depends on the level size. At the start of the run you get levels with a few huge bricks, at the end you get levels with tons of smaller bricks. I'm confused about which "little effect when the ball hits the paddle" you are talking about, it might be something related to the perks you got.

Just tried your version on Firefox on Android, but it seems to go into a reload loop (I keep seeing the Detenator loading page), then the device becomes unresponsive and Firefox crashes.

Ah, web dev, always a pleasure.

Agree on all counts.

Blocks can explode in place, but shouldn't rain as much (or any) debris that gets mixed in with ball and coins.

You mean the small particles that fly away for 150ms and fade away after you break a brick ? You could disable them (and many other effects) with "menu/basic graphics" if you want, but this never prevented me from seeing what's going on clearly.

My mistake. In addition to the same colored coins falling out of the bricks, I thought there were same-color brick pieces.

I like the way the changes you made look already! Has a better feel to it.