If the bag of chips that floated in the air and the straws that shot up unprovoked weren't signs enough, it was probably the green slime that dripped down on the counter that let shoppers know they entered a haunted convenience store. Who you gonna call?

As a way to introduce the new Ghostbusters scratch game for the Minnesota Lottery, advertising agency Periscope rigged a Twin Cities Holiday store to look like it was a site for paranormal activity. The video has garnered more than 730,000 views on Facebook since it was posted Oct. 22.

You can view the video here.

In April, Periscope won the Minnesota Lottery as a client after the account had previously been handled by agency Olson. In its first creative work for the Minnesota Lottery, Periscope launched a campaign for a Vikings football scratch game that included a Viking dressed in armor made of lottery tickets that drove on a motorized cooler to deliver items to fans. The campaign also featured a spot showing an epic opening battle with Vikings fans as the army.

"As we look to expand our player base, particularly with younger adults, digitally-centric marketing strategies will be critical to deepen engagement and relevance," said Jason LaFrenz, Minnesota Lottery's director of marketing and sales, in an earlier statement. "Periscope not only has extensive knowledge and experience in this arena, but their end-to-end capabilities will allow them to think about our brand holistically, making them the ideal partner to help us achieve our goals."