Four on the couch
A good indoor party game for older kids or teenagers. It could kind of be a get-to-know-you game, too. It involves lots of memory and strategy.
3-D triple-decker tic-tac-toe
Like tic-tac-toe, but with three layers, thus decreasing the likelihood the game will end in a tie and increasing the thought involved and the fun.
Tic-tac-toe
Yep, tic-tac-toe, the simple, classic paper game for two players.
The dot game
A quiet two-player game played on paper. Great for killing time in a car ride, waiting in line for that midnight showing, during class…(oh, except, you should pay attention in class ;-))