Trying to get gamers together on a regular game night is traditionally harder than herding cats (or herding catoblepas, for that matter). Kids, marriage, work, vacation, hot new movies, etc. all take a toll at one time or another. Still, enough people showed to still game, so what do you do? Sure, sometimes people will do a one-off game, or try a board game night or such. But what happens when you decide to run the game anyways? How do you keep an absentee player involved?