Cannon Balls 3D is a demolition game: aim a cannon at a structure and fire, and the physics decide how much comes down. Levels give you a limited number of shots and a demolition target, so precision matters more than firepower.
The 3D perspective adds a dimension the flat versions of this idea don't have — you're judging depth as well as angle, which makes a well-placed shot genuinely satisfying.
Hit the load-bearing parts at the base. Bringing down a support collapses everything above it, which is worth far more than a direct hit higher up.
Yes — levels give you a limited number, which is what turns it from a destruction toy into a puzzle.
Yes — a 3D game that runs in the browser with nothing to install.