Building a virtual reality video game can be hard on the senses. Just ask Orlando-based developer Nick Pettit.

Pettit, who makes his living teaching others how to code for an online website, said the trial and error it takes to build a game for virtual reality means a lot of time spent under the hood, in a virtual world.

Industry studies have found that the slight difference between a player’s head movement and the action within the game can be uncomfortable.

“I laid on the couch a lot from being sick,” Pettit told a crowd at a virtual-reality symposium recently in Orlando.

Pettit hopes those queasy days pay off when his video game “Neptune Flux” debuts Nov. 15 on Sony’s new PlayStation VR platform. That is roughly one month after the PlayStation VR’s Oct. 13 debut.

“Neptune Flux” follows a spelunker, who swims in ruins at the bottom of the ocean looking for treasure to sell.

The new trailer, which Pettit showed off for the first time publicly at an event this week, can be seen on Zoxide Games’ YouTube channel.

The game has been in development more than 2 years and Pettit only recently hired five voice actors to speak the lines of the game.

That process was taxing, Pettit said, as more than 300 people responded to an ad looking for talent and 60 read lines for Pettit.