Gaming in the Media Center

Tonight we host our second game night. We had at least 13 students and 2 staff members attend last month's game night. 
Word has spread and students and staff are ready to do it again. Right now everyone who wants to is bringing in their own favorites, including strategy games, dice games, and board games. We have interest in RPS's. I am concerned, though, about the time constraints since we only meet for two hours and 15 minutes each time.
I am interested in learning more about how other schools organize their game nights (if they have them) and what games are the most popular.

Update:
Fourteen students came to play last night! Many repeat offenders, as well as a few new faces, joined in the fun!
Many students worked on creating their D and D characters (myself included). This time-consuming task was directed by our very own DM. His knowledge and patience with us newbies made creating our characters a blast!
The game Evolution continued to be a popular destination for many of the participants.
Next month we have decided to play Eucher. I have always wanted to learn!
Next date is TBA.