A downloadable Adventure Game

Buy Now$5.00 USD or more

Set in the same setting, the Mausritter megadugeon, Tomb of a Thousand Doors is coming to Kickstarter January 9, 2024. Put your adventurous Lilliputians to the the test and see what splendor they can unveil in the super-complex of the Mad Maus King! Follow along at ttrpg.link/1000doors

The Sea is calling

The open oceans beckons to the small explorer

Come, set voyage on my water

Adventure to the massive unknown

Experience bliss forever


What is Lilliputian: Adventure on the Open Seas

Lilliputian: Adventure on the Open Seas is an adventure game about exploring the vast and expansive ocean,  filled with uncharted islands, hidden treasure, weird weather and unspeakable horrors. Character creation is fast, fun and random, classless, and relies on fictional advancement. It is based on Mausritter by Isaac Williams, Into The Odd by Chris McDowall and Cairn by Yochai Gal, as-well-as so many more. Lilliputian: Adventure on the Open Seas presents a streamlined set of rules for adventures in a world that is massive, and your adventures truly feel small. Whether you are playing as 6" tall humanoids exploring alongside Mice -or- a 6' tall human exploring a familiar world; adventure awaits.  Lilliputian is designed for at least two people, one Game Master and at least one Player. Together, Game Masters and Players work towards building a world full of excitement and adventure; all the while rolling dice and playing make believe.

With rules for open ocean hexcrawling, solo sailing, naval combat, building ships and lots of creepy sea monsters; Lilliputian will bring hours of creative fun to your table.

Lilliputian: Adventure on the Open Seas is the creation of Matthew Morris, aka ManaRampMatt (creator of Bernpyle, an unofficial Sword-and-whiskers zine for Mausritter and Caers & Crannogs, a quarterly zine for Cairn), and features the amazing and stunning works of a phenomenal creative team.

Lilliputian: Adventure on the Open Seas Features:

  • Core rules for streamlined, ready-to-play adventures. These core rules occupy only ONE PAGE and heavily built on the chassis of Into the Odd.
  • A quick and randomized character creation that will introduce you to unique characters for players to adventure as. Using many tables inspired by the likes of Cairn and The Black Hack as-well-as Starting Loadouts inspired by Electric Bastionland.
  • Simple and useful rules for resource management, encumbrance, item usage and durability that make the world feel natural and organic. Inspired by the ENNIE award winning Mausritter.
  • Combat rules that produce fast and potentially deadly encounters that scale as lone sailors join a crew, that crew acquires a ship, and that ship joins an armada.
  • Rules for hiring retainers and building a business and trade.
  • A magic system that pulls influence from the Goblin Laws of Gaming.
  • Advanced rules for Game Masters on how to create a world of adventure. Based yet again on the tools and resources in Mausritter.
  • Lots and lots of random tables; in the manner of games like Weird North and The Black Hack.
  • Not one, not two, but Five example adventure sites to run right out of the gate.
  • Beautiful artwork from the likes of Emiel Boven, Gnarled Monster, Nate Treme, Mac Teg, Felipe Da Silva Faria, Fernando Salvaterra, HairicJosiah MooreEvlyn Moreau, Kyle Latino (Map Crow), and Thomas Novosel.
  • Licopeo designed four amazing Character Sheets
  • Beautiful cover artwork by Bruno Prosaiko
  • Editing by Yochai Gal.
  • Layout consulting by Guilherme Gontijo

What folks are saying 

“Melding the simplicity of Into the Odd, the expandability of Cairn and the danger of Mausritter; Lilliputian packs a piratical punch and opens up new opportunities for adventures on the high seas in this gorgeously-illustrated book. - Isaac Williams, ENNIE Award winning creator of Mausritter

“Liliputian: Adventure on the Open Seas by Matthew Morris is the seafaring adventure game I’ve always wanted. It’s intuitive to play with tons of tables and resources just the way I like it! And gosh! Does this looks incredible! I can’t wait to hold it in my hands (or pirate hook)!” - Diogo Nogueira, Old Skull Publishing (Primal Quest - Essentials, Halls of the Blood King (ENNIE Award Winning), Solar Blades & Cosmic Spells)

"Presenting a hybrid of Into The Odd, Mausritter, and Cairn, Lilliputian offers a tight package of new rules, mechanics, art, and setting that should intrigue even the most ardent of land-lubbers." - Yochai Gal, creator of Cairn

"This gem really captures the sense of freedom and exploration of a vast fanta-sea, with countless islands & captivating adventures waiting to be discovered!" - LF OSR, Old School Inspired bookcrafter, artist, and content creator.

"Crisp layout and gorgeous colour scheme,dripping with nautical whimsy and boundless potential for adventure." - Colin Le Sueur, creator of Runecairn

Lilliputian, in both design and function, lives up  to its name of providing an experience of adventure on the open seas. Easy to navigate rules, procedures, and tables allows tables to dive right. This is an adventure/ruleset/resource that is unlike any other out there currently. My mind is already racing with sword and sorcery adventures  that await among the waves. When looking at new systems I like to see what it uniquely brings to my collection and I can honestly say that Lilliputian is a necessary addition to any game shelf." - Goblin Archives creator of Liminal Horror and The Mall

“I love open seas exploration, especially in a hack of some of my favorite rules sets. The setting generators are incredible, the art is evocative, inspiring and well chosen. This game makes me want to run it right away, and trust me, I will!” - Lucas Rolim, creator of MINIBX and Pacts & Blades

"To say that this game is a pirate-themed take on Mausritter, Into the Odd, or Cairn is to understate the breadth of its systems. You create an explorer, a sailor, a pirate, certainly, but then come the ships, the ship combat, faction rules with example factions, a five-step dungeon generator, and bestiary randomizers that can make eels with breath weapons that are afraid of moonlight and radioactive narwhals who are weak to riddles. The layout is direct and clear and sepia-toned. The art is an eclectic mix of cute cartoon sailors, serious illustrations of life aboard ship, and large woodblock-inspired scenes of the sea. This should be your pick-up-and-play pirate game." - Slade, Scablands Press and ANNA-X66 Redux

“Lilliputian: Adventure on the Open Seas is so meticulously refined that it feels like a new, better generation of roleplaying game. Obvious thought and care were paid to every detail, both mechanically and aesthetically. If you could take one rule-light RPG with you to a desert island, this would be the one, and not just for the obvious reasons.” - Ahimsa Kerp, Knight Owl Publishing

"Lilliputian might-as-well be a pirate ship because the crew assembled here are killer. With Salvaterra mapping the way, the  swashbuckling art of a Prosaik the pirate, a Gnarled kraken, and many other talented crewmembers layouting the ship, writing sea shanties and painting jolly rogers, this game is an awe to the eyes of every sailor." - Maik, creator of Moon Elves and Delve Deeper

"Lilliputian will be perfect to run an island-hopping sandbox campaign in the spirit of all my favorite sea-based settings⁠—Pirates of the Caribbean, Voyage of the Dawn Treader, One Piece...I can't wait!" - Adam Hensley, MONOLITH Science Fiction Adventure Game



Buy Now$5.00 USD or more

In order to download this Adventure Game you must purchase it at or above the minimum price of $5 USD. You will get access to the following files:

Lilliputian: Adventure on the Open Seas (DELUXE EDITION) 16 MB
Lilliputian: Adventure on the Open Seas (Rules Only) 43 MB
Game Master Rules (Advanced Rules).pdf 18 MB

ZiMo Zine

Support this Adventure Game at or above a special price point to receive something exclusive.

Press Copies

If you are looking to review this game on stream, a blog post, or some other channel please grab a free copy and tag me @manarampmatt so we can help share your content!

Community Copies

Claim a free copy of Lilliputian: Adventure on the Open Seas  if you are marginalised or in need.

I will add a community copy for each new backer!


If you like it feel free to leave a review! Anytime someone reviews the game we add another community copy

Download demo

Tomb of a Thousand Doors [Kickstarter Preview].pdf 39 MB
Player Facing Rules (Core Rules).pdf 24 MB
Character Sheet (Mausritter Style) 1 MB
Character Sheet (Cairn/Into the Odd Style) 1 MB
Retainer Sheet.png 1 MB
Ship Sheet.png 2 MB

Development log

View all posts


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Such a fun adventure and great artwork to boot!

Great product! :D
One thing that I feel is missing would be the dice drop hex map (for Vast Ocean creation)


I can't tell if the average person would see a review.. So check this game out! If you like Mausritter, this pretty well feels like the ocean expansion.


Amazing! Thanks for the review and I'm glad the game hit that way. That was its purpose!

“This zine will come with conversions to make these little, adventurous sailors into steampunk Victorian era Skyship Captains for use with Into the Odd or Electric Bastionland. It will also come with the conversions to outfit Lilliputians as hardened, seafaring traders and pirates for use with Cairn.”

Do these conversion rules exist in the zine currently? If so, where? And if they don’t, what is the plan for them - they sound very exciting!

It is on the last page. Not a massive block of text but rather some principles and suggestions 

oh thank you - it took me a while to find which PDF it was in as well. Appreciate the reply, Game is a fun read!

Are there still plans to distribute this beyond Exalted Funeral for those of us not in the US? Really want to pick up a hardcopy.

I hope so, I thought there might be some interested wholesalers who would reach out to Exalted Funeral but today I do not know if there is.

Not sure if this is the place to ask, but is the hardcover perfect-bound or sewn? I'm debating between the HC and zine for table usability and being able to keep it flat when in use is a big plus.

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Zine is perfect found in the hardcover is glue bound

Thanks for the info! I've had a lot of fun with this game and am looking forward to picking up a hardcopy.

(1 edit) (+1)

Came here from Einzelmaus. How solo-able is this?

Edit: Nevermind. I asked due to the “designed for at least two people” line, but in reading the demo I found it includes solo rules and advice.


Any plans for updating the pdfs with page numbers/replacing the XX notation?


Enhanced damage is 1d12 but firearms have higher damage that that (2d6,2d8,2d10). How do you deal with that?


I do 2d12

Do armor and weapons have usage dots?  If so, do I mark a usage dot down every time someone hits the armor?

Rations aren't listed in the Items and Costs table on p18, so I guess you assume you always have enough to eat.  For the consumables that do have cost, do you track them with Durability?

Is there anywhere I can buy the hardcopy from in the uk please?

Not as of yet, as they are through and Exalted Funeral exclusive. But they are Coming up for wholesale soon


a delightful rules-light game of nautical adventure with enough strangeness to make it unique!


I purchased this a while back and am really enjoying my prep work to add into our Mausritter story. How’s best to stay in the loop for a printed copy? The kids and I would really like to add it to our set!!

Would like to buy but can't use Paypal. And all c.copies claimed.. too bad. Also, will there be a printer friendly version?

I really wanted to buy this but it's Paypal only. I guess I'll wait until a print version is released via Exalted Funeral or some other shop. That being said, it looks brilliant.

I don’t know how to make  it have other payment options. I’ll look into it.  For the time being, feel free to snag a community copy

Hi! really love it! Will there be a printer-friendly version (with real black)?


Concerning the future print edition ov Lilliputian, is there a chance for a L.F. OSR print version? 

Hi there, what are the main differences between the draft from 4-22 and this current one? I just printed a copy off and am wondering if it's going to be worth printing again?

other than art updates and ventures in the back of the book being completed mechanically the rules have not changed

Thanks! I'll wait til the book is all done to reprint then :) The art you have in there is already so gorgeous!


This looks great! I might have missed this, but any plans to do a print run?


I definitely am planning one. Haven’t finalized it yet, but once artwork and layout wraps up I’ll post more info! I am super excited about it!

thanks for your kind words my friend


Suuuper looking forward to a print run as well! This looks amaaazing.


What a beautiful collaboration with all the artists! Thankyou for something this fantastic!

Ouuuuh can't wait to print this bad boiii! (Or to help funding a print-run if there is one at some point). Great work so far! I am really enjoying the art-styles you've been exploring in recent years with all those documents you are pumping out like a madman hahaha.

Are the PCs literally small, like Gulliver's Travels Lilliputians? Or figuratively small, i.e. exploring a vast unknown?


Well, if you’re playing any mouse adventure game, then yes they are literal 6 inch tall humans or if you’re playing it in a fantasy setting then they can just be explorers in a super large ocean… It is kind of open ended


This is the sort of FRP that I am looking for - can't wait to see more!

it is now currently itchfunding and I’ll be posting weekly edits of the file until it is finally complete. Stay tuned!

also stoked you are excited 


That looks like it's going to be wonderful!


Thank you so much. The team is growing too. Emiel Boven (creator of DURF) is onboard to do artwork. I am excited!


 I’ll be posting weekly edits of the file until it is finally complete. Stay tuned

Great - I'm looking forwards to it!