Beat Blader 3D is a rhythm game where you slide a blade left and right along a neon road, cutting blocks that arrive in time with the music and dodging obstacles that can't be cut. Every hit is on the beat, so the game plays like a track you're performing rather than a course you're navigating.
It draws on Beat Saber's idea — cutting to the rhythm — flattened into a one-axis browser game, which turns out to work well because your whole attention goes on timing.
It borrows the idea of cutting objects in time with music, simplified to a single left-right axis so it works with a mouse in a browser.
You can play muted, but the blocks are placed on the beat, so playing with sound makes the timing dramatically easier.
Yes — drag to move the blade. Nothing to install.