Yeah. I have to go with Ninja Spirit. I mean hey, I was a kid and rolled up $75 in pennies using looseleaf and scotch tape. Then after an entire day of rolling pennies I walked to the mall in the dead of winter praying that Radio Shack would take the money. And thankfully they did.
hehe.
And I wasn't disappointed. Very cool game and almost identical to the arcade.
However, I've always regretted not owning Splatterhouse for the TG 16. Though I rented it enough...while you could actually rent TG games. That luxury didn't last long, at least not around these parts.
So yeah, Ninja Spirit gets my vote, but mainly just because of what I went through to buy it. lol