Aldarc
Legend
There is also another method that hasn't been mentioned that doesn't fall into these options: roll under attribute.
The difficulty of monsters may affect the required TN of the attribute as well. You could even do the same for saving throws. You can see roll under with the OSR games such as Beyond the Wall & Other Adventures and Black Hack.
The difficulty of monsters may affect the required TN of the attribute as well. You could even do the same for saving throws. You can see roll under with the OSR games such as Beyond the Wall & Other Adventures and Black Hack.
Letting the players know the Target Number is common practice for the Cypher System and Index Card RPG. ICRPG even just encourages a singular TN for difficulties in a room. So you may assign the room a TN (e.g., 13) and that is the AC of monsters and the difficulty of all checks in the room. You can further adjust this by making something in that room Easy (-3 TN) e.g., 10) or Hard (+3 TN: e.g., 16).I’m not an OSR gal and I haven’t played any pre-3e editions of D&D (and accordingly, didn’t vote in the poll), but I will say this for THAC0: if you tell the players their target’s AC (I know, probably not something most OSR DMs are wont to do), it allows them to do the math first and figure out what number they need to roll to hit. This changes the process of rolling to hit from: