ADAD vs. OSRIC

OSRIC vs. ADAD?

What is the difference?

Game-engine-wise, there is not that much of a difference. There may be a few things around armor vs. weapon types, initiative, classes, spells, numbers, and other fiddly bits - but the core game engines are the same. 

There is a minor difference in the combat engine being more streamlined in ADAD vs. OSRIC, and I prefer ADAD's streamlined combat which integrates weapon speed much better. The fact weapon speed it directly tired into initiative means the system Gygax wanted us to have (with speed factor) has been implemented in a way that does not seem like a penalty, and it is easy to manage and use. I would use ADAD's combat system with OSRIC, most likely.

The modules work the same, monsters work the same, spells work the same, and they are 99% compatible. Either OSRIC or ADAD is a solid choice.

The significant differences are in options, and the most considerable differences are in the new skill system and the classes available. To begin, OSRIC's class list is as follows:

• Assassin
• Cleric
• Druid
• Fighter
• Illusionist
• Magic User
• Paladin
• Ranger
• Thief

ADAD has all of those, plus:

• Bard
• Jester
• Skald
• Cavalier
• Blackguard
• Vates
• Mystic
• Barbarian
• Savant
• Acrobat
• Mountebank

The ADAD Darker Path expansions add:

• Witch
• Necromancer
• Demonolater

What sells me on ADAD over OSRIC is having a first-edition bard and barbarian class, plus many more to explore and play with. If you don't need those, keep your life simple and play OSRIC. If you have 5E players wanting more class options and choices, then ADAD is the better game.

ADAD is the "more stuff" game, reflecting the first edition at the end of its lifecycle when it was expanded and fully matured. OSRIC was the game when it started, with just the first three books.

Me? I will go for the "more stuff" since I played AD&D back in the day, and I have campaigns that will use those new classes. The only thing missing is new race selections and more modern designs, but I can create these with Grok 3 and beta them myself.

ADAD typically expands every area it explores, from spells, equipment, strongholds, and weapons—it is all more and expanded. Is "more" better? You need to answer that for yourself.

For those wanting an easier and more streamlined game, playing OSRIC will be the better choice since the options and choices are just the classic selections. Both are on my shelves. ADAD is the apparent "more stuff" game, so it keeps me busy exploring new options. OSRIC will always be my "Old School Essentials" version of the first edition.

ADAD has a skill system where you "pay XP" to get non-combat profession-like skills for your character. This is a more in-depth roleplaying style character improvement than OSRIC. Again, this falls into the "more stuff" theme of the game, and if you don't want that extra system, stick to OSRIC.

There is an OSRIC argument for "keeping it simple" and only focusing on the original first-edition content. From this point, you could expand the game and keep your core experience as streamlined and narrowly focused as possible.

Myself?

Both games are on my shelf, alongside my first-edition books. They all support each other.

ADAD does things the best, for me.