Greetings, members of ModDB. My name is Kenny, and I am currently the sole team member of the Zombie Swarm team. I originally started this project in about 2011 with a good friend of mine, but due to neither one of us knowing the first thing about putting together a source mod, it was doomed to fall apart. I had managed to piece together a few scattered scraps of content, but looking back, they weren't really of sufficient quality. Moving on to the present day, I now have much more experience working with the source engine, but I am still something of a novice. Filled with vigour, energy and ambition, I have since resumed work on my abandoned Zombie Swarm project files. At present, my plan is to replace all of the artistic assets and maps in Alien Swarm with novel ones. Essentially, Zombie Swarm will be a re-skinned version of Alien Swarm, with a couple of new missions.
The Thompson submachine gun was invented in 1919 and saw use by the U.S. military until as late as 1971. So, I think that putting it in my game wouldn't be too far of a stretch in spite of the stipulations of the National Firearms Act. However, first and foremost, the Tommy Gun is something of an iconic weapon and I really wanted to include it in my mod for that reason.