My favorite games are bocce ball, gluckhaus, game of the goose, damas, mulino/ morris or merellus, primero, and “things”.
Here is a repost of an article about some others, as published in the Aethelmarc Gazzette:
Here are a few links for some great games I have played at events and hope to see return to popularity.
One and Thirty, an early version of Black Jack
http://jducoeur.org/game-hist/game-recon-boneace.html
Primero: “Primero, Prime, Primus, Primiera, Primavista, often referred to as “Poker’s mother”, as it is the first confirmed version of a game directly related to modern day poker, is a 16th-century gambling card game of which the earliest reference dates back to 1526.” – Wikpedia
http://jducoeur.org/game-hist/game-recon-primero.html
Gluckhaus: House of Fortune Dice Game
http://www.medieval-fightclub.com/pages/Gluckhaus-%252d-House-of-fortune-dice-game..html
http://www.gerryadamsconstruction.com/germans/gluckhaus.html
http://en.wikipedia.org/wiki/Gl%C3%BCckshaus
http://www.coht.org/resources/Gluckhaus.pdf
Tablero: This game is played with coins moving up and down a board based on a players dice rolls. There is a version played at parties not using coins. Just remember: Play Responsibly or camp security might try to shut you down. The Non Period rules are posted below.
http://www-cs.canisius.edu/~salley/SCA/Games/tablero.html
http://www.drinkiwiki.com/Tablero
We don’t even have to stop at indoor games. Croquet and Bocce are well-documented and fun at events. I have set up Bocce courts at events and people enjoyed playing. There are a great deal of people at each event who are not doing one of the mainstay activities like heavy weapons, fencing, archery, thrown weapons and the like. They might like something to do. And even after those fore-mentioned activities are done, those people may want to play a few games before court or after feast.
Might I suggest that you bring easy to teach games? Not as many people have played games as they used to. Keep them simple so that people can start playing immediately as in the Crokinole experience. As time progresses the games can become a little more difficult as there are experienced players to help the new people out.
Over all, its about having fun!