Goblin Queen (She/Her/Hers)
Well I said “the d20 engine.” I assumed it would be clear from context that I meant the system rather than just the resolution mechanic, but I guess I should have specified.I know what the d20 system is. Very obviously. That isn’t what you said, first of all. You referred simply to the d20 resolution mechanic. Ie, roll d20 add mods compare to target number.
Each edition has made changes to the system, yes, but personally I still see them as fundamentally running on the same engine. But whatever, if you don’t like that terminology, I’m not going to argue it with you.4e and 5e are not the same engine as the d20 system, however, so even if you meant the d20 system as a whole, it doesn’t work.
Things like unified bonus progression, advantage, and bounded accuracy, are enough to make them different “rules engines”.