Some of them were okay. Mega Man 2. Had the "wall-grab" move before it ever appeared in any "real" Mega Man game. And the mother-fucking Mecha Dragon, astounding that they were able to fit it in among the rest of the LCD elements.

Also, Mousetrap. Arguably an improvement on the arcade original which was Pac-Man ripoff maze game with the gimmics that you could open and close some doors and save your power pellets... er, dog bones after collecting them and use them whenever you wanted. The LCD version reimagined it as a 3rd person over the shoulder psuedo 3D game. It's like you were right there in the maze with your little mouse buddy!

Admittedly I've never owned any Tiger or Nintendo Game and Watches, only briefly played what my friends had, so there may be some nostalgia goggles involved...