ODD: One Depth Deeper
A downloadable game
Heroes once reveled in an age of adventure and glory. Life could be bought and sold with coin and the price of victory was blood on the sword.
Rediscover an era when courage and gallantry defined the man. An era when ones great deeds were declared by song and celebrated by all. An era where imagination rules all in the lands of pen and paper!
Onward we go, to explore one depth deeper!
Inspired by the original dungeons and dragons, BX, and AD&D; ODD is a game with a simple but deadly design. Take up the mantle as a Fighting Man, a Magic User, a Thief, or a Cleric and delve into the dungeon to steal coins and seek adventure!
Volume 1 has everything you need to create characters for ODD. Volume 2 contains Monsters and treasures, while Volume 3 (planned for release sometime later in the year) will expand the game system and cover wilderness and underground exploration.
ODD is compatible with any OSR product with minor changes.
VOLUME II: MONSTERS (and treasure) OUT NOW!
If you wish to print your own booklet, print both pages of the Cover file onto cardstock (cream colored is recommended if using printcover2, any color or type works with the less ink consuming cover1). The interior pages should be printed in booklet form, folded in half and stapled together with the cover page.
if you would like to randomly generate characters, there is a character generator on perchance found here: Character Generator
Download
Click download now to get access to the following files:
Development log
- Minor Update37 days ago
- Arcane Spell Cards!78 days ago
- Minor update: HP recovery and vol. 3 previews85 days ago
- Minor Update: Grammar and Magic94 days ago
- Major Update! Miscellaneous Treasure and more!96 days ago
- Minor Update: Item DescriptionsNov 26, 2025
- Major Update! New Races and Classes!Nov 10, 2025
- Minor update: Layout Error fix for Vol 2Oct 13, 2025
Comments
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This game addresses many inconsistencies in the original game and makes it much more logical, quite impressive! Some questions and remarks:
- According to the text, on a critical hit, the Pugilist "stuns" his opponent. Should this be "sunders" or perhaps "dazes"?
- I don't understand the purpose of the Size table on page 19?
- Page referrals often point to the wrong page, it may be good to check them.
- Would it be possible to still get a hold of the old cover?
Firstly, thank you for checking out my game!
Yes the Stun should be dazed. Nice catch.
the table on page 19 has to do with the attack adjustment. So if your throwing oil at a small creature you gain a -1 to your d20 roll.
Ive corrected many of them but there are a lot ill give it another pass.
And yeah I suppose so. I just didnt want so many files to download. Caused a bit of a mess. Ill upload the alt cover in the future.
Thanks, makes sense! A gameplay question: at which point do you allow characters to gain weapon proficiency? Do you tie it to certain events or perhaps character level?
Proficiencies require training time and money. So it can happen anytime they gain the money to do so. However, due to other expenses, they often have to decide as a group when and who will get to train. This means they might have to sacrifice buying that new plate armor or living in a cheaper room. plus its usually a great risk to adventure long enough to gain the required coin to afford to train.
As a DM, you can give this as little or as much extra flavor as you would like.
I guess it’s all about pacing. With higher hit die monsters doing so many attacks, it seems it can quickly become deadly for the PCs, and the extra attacks balance it out a bit. (Besides being fun — which player doesn’t like extra attacks? 😉)
How your alignment work?
They are all separated ?
No lawful good or lawful evil?
It is based on the 5 alignment system of Holmes Basic. So no lawful evil, lawful good etc.
Im not usually one to hand out a list of problems with something, I trust the author to fix mistakes, but I did find it funny that within volume II, in the Lair Population Division table, the Humanoids row totals up to 110%.
I know its a mistake, but I think its funny to envision there being more "Goblin Per Goblin" so to speak.
As funny as it is, it is indeed a mistake (thank you for pointing it out). I had a lot of errors on vol 2, so I just did a quick update to fix the bulk of them.
Great game, the new classes and races are so cool! Yet I don't get how does the roll for surprise work. Did I misread something?
huh. The rules on surprise seem to be missing. Great catch ill make sure to add them back in. In the meantime:
You just roll a d6. Monsters and players are surprised 2 in 6 chance(some monsters vary). Light source modifies this. You roll 1 die for each side (or for players you can even do each player) and that is only rolled at the beginning of a combat encounter in which it is pertinent.
Thanks! This has been very helpful. Can't wait for vol. 3!
I am curious about Magic Users. Per their table, they have 1 level 1 spell. But Starting Spells give them d4? Am I misreading? Thanks
i believe that table is how many spells of each level a day they can memorize
Yea I figured that out, thank you. Initially I was confused, at the idea of having 4 spells. But only one of the 4 can actually be used. Cheers
Yes, since ODD is inspired by 0e, it uses Vancian magic. your character may know 4 spells at level 1 but may only memorize one per day. this gives them a bit more flexibility.
Excuse me sir, I noticed a serious flaw in this game! No halflings! But do not fret, I have solved the problem here:
https://www.msjx.org/2025/08/halflings-odd-race.html
On a serious note, this is a wonderful little game, I love it! Cannot wait to see the other booklets. Great work and thanks for sharing with us.
wonderful little addition, hope others see this as well to get their Halfling Fix!
Thanks for doing this Matt!
Yea, this is nice! I like what's going on here. Will be happily following along. Clever use of the dice pips to mark increased skills. I think this will make a great game to use with my Solo Sheets.
I'm glad to see you enjoy it! I loved Fallen and its supplements!
Thanks, that means a lot! I just shared the link to this on Blue Sky! I hope more folks pop over to have a look.
Well that certainly explains another large uptick in followers/ downloads! Appreciate the boost!
This is very well done, I will be thoroughly reviewing this and may use it for future OD&D style campaigns. I love the art, it really fits the style. On page 5 I recommend showing 0.1 Gold Pieces, as I almost missed the . in .1 and thought there was a typo.
glad you like it! If you run it let me know what you think so I can improve it. Also, good suggestion with adding the zero, will do!
Very elegant. Love it.
Will there be other volumes?
yes! Im working on getting volume 2: Monsters out very soon. And the final volume, will be for game masters.
Seems very to the point and nicely made. Good job!