**Preface**

Back at my univercity days - i had a hobbie - probability theory Cant say i'm calculating much nowdays... But sometimes i do Most of players of BGTSCC knows - rolls of hostile NPCs aka monsters is... very weird to put it mildly At beginning of this week i've tried to figure out how their rolls actually works

**Chances**

Monsters (or at least most of them) scoring critial hits at natural 20. Chance to roll 20 is 5%. Well... Its supposed to be. Only monster i found which actually rolling 20 in 5% of cases - is basilisc at Durlags Towers exterior. Also there is one intersting monster at this locaction - skeleton archer, which arent scoring much of criticals untill he switches to melee. When it does his critical rate goes up to 35%. Most of other monsters scores natural 20 with 10%-20% probability. So it looks like their critical rate is predetermined, cause i've calculated probability for each mentioned monster several times - results always was same.

**Some other monsters**

Xvart warrior 15% (other xvarts 10%)

Trolls at Troll Claws - 20%

Gnolls at Reaching Woods - 20%.

**The Question**

The question is... If their crit ratio is predetermined. (or perhaps its hit ratio?) What they are rolling? Or they arent rolling anything and ilussion of rolls is just for D&D Immersion?

P\S how i calculated probability? i've written 100 of rolls of each monster into notepad. And calculated probability. 3 times. So its 300 rolls for each metnioned monster Yes, i know, i'm weird