diaglo
Adventurer
Supplement II Blackmoor had the body part variants.
but a natural 20 wasn't always a hit. that came with 1edADnD and 2edD&D Holmes Basic. and even then a natural 20 to hit wasn't always a hit in 1edADnD. that rule was for saving throws and such. a natural 1 was a failed save. and natural 20 was a successful save.
The Armoury also had a booklet for the d30 with a critical hits table back in the day.
but a natural 20 wasn't always a hit. that came with 1edADnD and 2edD&D Holmes Basic. and even then a natural 20 to hit wasn't always a hit in 1edADnD. that rule was for saving throws and such. a natural 1 was a failed save. and natural 20 was a successful save.
The Armoury also had a booklet for the d30 with a critical hits table back in the day.