by Darius137 » Mon Jun 28, 2010 11:54 am
My opinion:
OP: Operation. A game planned like a military Operation using a planning process from a real world military. To do this, we usually end up doing US style missions, as that is what we know. To have a real OP, you need to include an Operations Order.
Mil Sim: It simulates the military. This can be as simple as you having everyone in attendance with "the look" to having realistic situations, such as in a city, using vehicles, or a realistic mission and Operations Order. Most Mil Sim games should be OP's, though there are plenty of militaries and conflicts out there that are pretty unprofessional.
Themed: Any sort of event that takes you out of reality with a set goal, such as zombies, previous dates (Manicotti was set in 1967) or whatever you can think up (a game based on GI Joes, or Space Marines)
Skirmish: Any sort of game of airsoft where you're just out there playing. This includes most of what people call OPs and Mini-OPs, no matter if it's 20 people or 350.