GraviTrax: カラースワップエレメント

Watching the marble roll through and suddenly appear to change color mid-run genuinely surprised me the first time I set it up. It’s a simple piece that adds a fun visual illusion without complicating the track design.

The color change trick is genuinely clever and adds a fun surprise to the run, though the piece itself is a bit pricey for what it is. My kids had it working within minutes and loved watching the marble come out a different shade on the other side.

It took a few tries to get the illusion working just right in my track, but once it did, the effect is genuinely clever. My only wish is that it came with clearer instructions for the angle needed.