Financial planning often involves lots of spreadsheets, pie charts and eyes glazing over.

Fidelity Investments aims to change that equation with an experiment in 3-D technology designed to make money management seem more like a mesmerizing video game than mundane number crunching. Welcome to “StockCity,” a virtual-reality landscape dotted with skyscrapers representing the stocks in a person’s investment portfolio. A Web version was released Wednesday at www.fidelitylabs.com, but StockCity ultimately is meant to be viewed on the Oculus Rift, a virtual-reality headset that still hasn’t been released on the mass market.