I’m running my group through River Into Darkness by Greg A. Vaughan. That requires me to change some stats. I thought I’d give you a quick rundown of what I used until now:
| Monster | HD | AC | hp | damage | notes |
|---|---|---|---|---|---|
| Enraged Dragonnel | 8 | 15 | 41 | 1d6/1d6/1d6 | Forget about snatching and all that. |
| Kapoacinth Rogues | 6 | 14 | 35 | 1d6/1d6/2d6 | I think at the beginning I made some mistakes with the hitpoints. |
| Hippo | 3 | 12 | n/a | 1d6 | Party scared it away, no need to roll for hp. |
| Elven Ranger | 3 | 14 | 8 | 1d6 | |
| Girallion | 7 | 13 | 35 | 1d6/1d6/1d6/1d6/1d6 | Roll claw attacks in pairs. If both hit: Extra 2d6 damage. |
| Crocodile | 2 | 13 | n/a | 1d6 | Our paladin (aka. cleric) killed it with a crit before I could roll for hitpoints. |
| Pygmy Keche | 5 | 16 | n/a | 1d6/1d6/1d6 | Roll both claw attacks together. If both hit: Extra 1d6 damage. I rolled hp on the fly. |
| Mamba | 1 | 10 | 1 | 1 | +8 attack vs STR defense for 1d6/1d6 STR damage |
| Faruq as a zombie | 4 | 13 | 15 | 1d6 | Improvised some attacks for the yellow musk creeper. |
| Lizardmen | 2 | 19 | 3 | 1d6/1d6 | +5 to hit because of bless and superior position; AC is high because of the shield. |
| Lizardman Shaman | 3 | 17 | 10 | 1d6/1d6 | Casts bless, burning hands, and sleep. |
| Shambling Mount | 8 | 20 | 32 | 2d6/2d6 | Immune to fire & electricity. |
| Elven Warriors | 2 | 11 | 7 | 1d6 | The party killed about 15 of them before they fled. |
| Esteban | 6 | 10 | 32 | 1d6+2 | +8 to hit because of fighter levels. |
I really liked “converting” the monsters:
Done. 
Tags: RPG
M20
Old School
M20 Hard Core 