Hrmm....each game has the publisher's URL at the beginning of the game.

The truth is, I found these games some time ago in 2003/2004 and just put them up on my site and left them.

I can't remember the exact sites right now.

What sort of affiliate links are you thinking?

Figure out what types of products would be interesting to these people. Maybe nintendo maybe casual desktop games?

You could always do adsense but really throw it in their faces. Perhaps the screen just shows ads and the user has to scroll down to get to the games.