The Orlando Science Center is holding its annual Otronicon video-gaming expo this weekend, and part of its draw is a 48-hour competition organized by UCF to create a video game for a virtual reality game system.

The 20 chosen competitors, which have already been placed on four teams, will be locked in a lab that has see-through walls, so visitors to Otronicon can observe them at work. The competition was organized by the UCF’s School of Visual Arts and Design and the E2i Creative Studio in the Institute for Simulation & Training.

This is the ninth year of the technology festival, which runs today through Monday, Jan. 20. The event is to explore Orlando’s technological impact on the worlds of entertainment, simulation, education, health care and other fields. Visitors can also see dancing robots, interactive technologies, a demonstration of a bionic suit to help people walk who have lost the use of their legs, and other activities.

The center is at 777 E. Princeton St., Orlando. Hours of the show are 10 a.m. to 10 p.m. Friday and Saturday, 10 a.m. to 6 p.m. Sunday and Monday.  The cost is $19 for adults, $17 for students and seniors, $13 for ages 3-11.