When i go to Spark's available plugins section it is not listing anything. Usually it was listing Reversi, tic tac toe and some other non-default plugins. The list should be pulled from the site. Maybe that was broken after the move, or maybe those plugins are just not built anymore.
translator, tic tac toe, battleships and reversi are commented out in Spark's build.xml, so that's may be the cause of them missing
Plugins are not in the build, so that's probably the reason they are missing. Once any of them is fixed, we could look into this again.