I saw those minis at WalMart yesterday. I think they were like $25. Yes, the bat stick screws into the D-pad.
that is for the standalone single game units,
which are the NES versions.
the multigame ones are double that or more,
and use the arcade roms where applicable.
for the namco unit, several of the games were
genesis versions:
--------------------
pac panic -> pac attack
rolling thunder 2,3
splatterhouse 2
dig dug 2 was never a dedicated unit,
but an upgrade kit, and the NES version
had more levels on it.
later
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