I Took a Lickin' From a Chicken is added and playable. I just need to do the internal artwork (save the best^B^B^Boring work for last, right?). There's an annoying problem with sound, caused by aliasing, which again is caused by missing interpolation in MAME's sound core. Hear:
1) http://tsk-tsk.net/net/temp/chicken_dac.wav
2) http://tsk-tsk.net/net/temp/chicken_speaker.wav
The old speaker device has its own filtering, unlike the modern dac device.

It remains a mystery who is the original contractor/manufacturer. The Japanese version was by Bandai, and they consistently have PT-xxx as pcb label.

I also fixed Milton Bradley's Plus One (the multiplayer Simon-ish board game).