Vlambeer, the developer behind Ridiculous Fishing and Super Crate Box, lost a significant amount of hardware and the code for its new title Luftrauser after the items were stolen at E3.
"Basically everything Vlambeer is in the bag," co-founder Rami Ismail told Polygon.
"So it kind of feels like Vlambeer got stolen. We have good backups. We take good care of everything, We've got decent backups to continue working. It's just a giant pain."
Polygon also reported a theft, and local authorities told Ismail that E3 attendees were at risk.
"When I said a bag with hardware was stolen they said, 'Are you down for the convention?' Apparently, there had been quite a few reports about stuff that was stolen. They actually mentioned that it was likely people had been targeting people that were at the convention."
The items that were stolen included a laptop, iPads, a Vita and a Vita test kit, and a Kindle Fire. Polygon lost a camera. Despite the reports, the ESA said the incidents this year had been "minimal."
"Our security team and attendees did an excellent job in securing valuables on-site. There were minimal occurrences this year and we appreciate everyone's vigilance in following common sense procedures."