In addition to NINJA SPIRIT, the other game I finally finished today was PARASOL STARS, although it is one of the earliest games I ever had for the system. When I bought the system from a clear-out years ago as a kid, I was also able to pick up a handful of games from my local video rental store that was also getting out of the TG-16 market. Of all the games I got, the only two I remember actively playing was FANTASY ZONE and this one, the third (kind of) game in the BUBBLE BOBBLE universe. I was a big fan of the original game in the arcades and on the NES, but I think PARASOL STARS might even be a little better. More variety, bigger sprites, more colors and a score (albeit repetitive) that even manages to one up the instantly recognizable BUBBLE BOBBLE theme. The best improvement is the whole umbrella mechanic, which allows for different kinds of attacks but also allows you to manipulate jump and float speed, and the ability to hoard attack bubbles to form super attacks.
PARASOL STARS does a great job balancing playability with difficulty - it's easy to pick up and play and the central objectives are pretty easy to execute throughout the game, but with all the things going at once in the later levels it can be difficult, but never overwhelming. I finished this with my girlfriend on the other controller (thanks for that, null), and she was able to keep up and play right to the end, even delivering the final blow during the final bonus world. A great two player experience. It took us several tries to advance in the game, but eventually on one playthrough we activated a hidden door that took us to a room with a 99 credit coin, and it was pretty smooth sailing after that. Maybe a bit too easy, but that was something I appreciated about the game - each playthrough seemed to have us doing something different, whether it was unleashing a certain random power attack, or unlocking a bonus stage or 1UP. Even on our 10th attempt we were still uncovering new things.
Props to Working Designs for bringing this great game Stateside, in what would be the start of a pretty legendary run releasing lovingly localized gems on the SEGA CD, Saturn and PSX in addition to all their great stuff on the TG-16.
Chime up and give this game some love...I only saw three or so responses in the GOTW thread from 2014. The dudes from Taito deserve some love.