SPRINGFIELD, Mo. -

Some local college students are under fire for what they fired at each other.  After another round of a massive campus-wide game of "Humans Vs. Zombies" at Missouri State University there's some concern the game's weapon of choice may soon no longer be an option.

The game spans the whole campus for an entire week in October and then again in the spring.  Most of the students carry Nerf guns at all times.  That's not against campus policy-- yet.

The members of Missouri State's Live Action Society don't claim to be your traditional athletes.

"Magic, Dungeons and Ddragons, any sort of video games, table top games," explains member John Prock, who is hanging out with other members in Plaster Student Union.

But they've found a sport that doesn't involve cards or a controller.  John and his buddies play Nerf.  It's an official university activity with an official university adviser, and officially-- the guns are allowed on campus.

"To our organization they're everything.  That's all we do is play Nerf games.  So without Blasters we can't do anything we do," explains adviser Chad Holmes.

But last month at a student government meeting. The director of MSU's safety and transportation department said during the last round of LAS's biggest event-- Humans Vs. Zombies-- there were between 15 and 20 complaints about the game and the guns.  One teacher even went on lockdown thinking there was an active shooter on campus.

The university isn't concerned with how it feels to get hit with a nNerf gun because it's about equivalent to getting hit with a ball of socks, which is what a lot of other universities use.  Rather officials are concerned with what the gun looks like.

"We actually have rules against painting your Nerf Blaster to look like a real gun, black, silver-- we're really harsh about it," Chad says.

But the club admits-- "I can definitely see a passerby getting confused if they don't know what's going on beforehand."

A simple solution, they say, is sending out campus-wide emails before game week, not banning the Nerf guns altogether.

"Without the Nerf Blasters not as many people want to play," Chad tells us.

Instead they'll play something in their comfort zone and, John says, never discover their inner-athlete.

"We're getting them out of their shell, we're encouraging them to do something very physical they might not do otherwise and it's a big community with a lot of people who have similar interests in hobbies," says John. "You meet through HVZ but then you're friends the rest of your college life."

481 students to be exact discovers their inner-athlete in this last "Humans Vs. Zombies" game, the largest yet.  Missouri State is not the only unversity that does this.  More than 800 other schools and organizations play HVZ games, some which allow the Nerf Bblasters and some which don't.

We tried to call the safety and transportation director for comment about the Nerf gun policy or a potential ban but our call was not returned.