|Reference added: 402|
"Pocket Tennis and Pocket Tennis Color are very similar games."
I got this because I heard it was a little more challenging than the later Pocket Tennis Color (see entry 402). And it is, but unfortunately the increased difficulty comes from less forgiving controls rather than tougher computer opponents: serving in this version is much touchier, and your little player seems to have a much shorter reach.
Aside from that, the obvious color difference, and having a few fewer playable characters and courts, this version is pretty darn similar to the NGPC version.