The graph below is of all the errata changes in Cthulhu Wars, when they occurred and what they entailed.
You can also download a copy of this as an Excel file: Click here to download.
| Type | Family | Updated in | Changes |
| Spellbook | Black Goat | O2 | mentions the combat value impact of Dark Young on Shubby |
| Spellbook | Black Goat | O2 | add an effect if die roll fails |
| Spellbook | Yellow Sign | O2 | capped at 1 PP max per Action |
| Spellbook | Yellow Sign | O2 | second action is optional |
| Spellbook | Yellow Sign | O2 | second action is optional |
| Spellbook | Sleeper | O2 | only 2 choices, not 3 anymore |
| Spellbook | Azathoth (neutral) | O2 | only affect enemy units |
| Spellbook | Cthugha | O2 | errata |
| Spellbook | Bokrug | O2 | only 2 choices, not 3 anymore |
| Spellbook | Ghatanotoa | O2 | errata |
| Loyalty Card | Bokrug | O2 | errata |
| Loyalty Card | Ghatanotoa | O2 | errata |
| Faction Card | Great Cthulhu | O2 | Elder Sign gain on 2 spellbooks unlock (first and last) |
| Faction Card | Black Goat | O2 | Shubby combat value calculation |
| Faction Card | WindWalker | O2 | Hibernation nerf (gain capped at current power level) |
| Faction Card | Opener of the Way | O2 | Specific spellbook unlock for 2-3 players game |
| Cards | Core box | O2 | (new turn order) |
| Spellbook | Great Cthulhu | O3 | Action cost is now 2 |
| Spellbook | Great Cthulhu | O3 | Submerging back on the board is now a 0 PP Action |
| Spellbook | Tcho Tcho | O3 | give a HP to opponents when unlocked |
| Spellbook | Tcho Tcho | O3 | ES gain is per area with your gate and your HP |
| Spellbook | WindWalker | Final Onslaught | Spellbook works for Acolytes OR Wendigo (O3 specific typo) |
| Loyalty Card | Stretch Goals | Final Onslaught | Front and Back are the same (and card use requires to flip card) |
| Loyalty Card | Masks of Nyarlathotep | Final Onslaught | misprint by China (back) |
| Loyalty Card | Masks of Nyarlathotep | Final Onslaught | misprint by China (back) |
| Spellbook | Ancients | Final Onslaught | Specify that "using this Spellbook is not optional" |
| Spellbook | Ancients | Final Onslaught | Specify that "using this Spellbook is not optional" |
| Spellbook | Ancients | Final Onslaught | Specify that "using this Spellbook is not optional" |