| Field | Role Play Gaming |
| Went Obsolete | early 2000s |
| Made Obsolete By | The introduction of 3rd edition of Dungeons and Dragons game |
| Knowledge Assumed | Roll a twenty side dice, Role play |
| When useful | During fight simulation in Dungeons and Dragons game |
The “Throw to Hit Armor Class 0” value was used to determine how easy it was for one character to hit another one. Usually this value was determined by Dungeon Masters, in advance, through “complex” calculations.