Join the friendly community and ask for help, if you need it, for interpreting the rules or acquiring game materials!
 
 
DDM is in its third edition. You can download the latest iteration of the V3 rules here:
DDM V3 short rules For ease of use.
DDM V3 full rules | 5-page rules summary
DDM Floor Rules Conduct and penalties up-to-date.
Note on DDM editions: There are players for each of the three DDM editions worldwide. Although this site is most useful for the current version, the other two are as much DDM in essence. While Revised and V3 are very similar, the 1E has a couple of very different rules - of which Routing has now been made available for the V3 players as well.
Routing (optional rule for V3)
Note on maps: Some of the DDM maps can be found in more recent D&D releases like modules or map packs. All you need to do is draw or otherwise mark the start and victory areas to them and you're set.
There are plenty of DDM maps that were designed for this game. In the Gazetteer below you will find square-by-square details for most of the tournament-legal maps. Of course, in friendly games you can play on any map you like with 1-inch squares.
 
Other DDM maps not yet in the Gazetteer:
Half-sized:
Pirate Cove | Pillars of Heaven
Beholder's Lair | Tract of the Tarrasque
Dwarven Halls | Haunted Quarry
Full-sized:
Pirate Cove doubled | Pirate Cove + Monster Lair
Pillars of Heaven doubledA | Pillars of Heaven doubledB
Beholder's Lair + Haunted Quarry
Dwarven Halls twin | Pit of Doom (Stonefang Pass)
Special:
Dungeon Duel (DC1)
Links to DDM map files WotC offered for free, available through the archive.org:
The King's Road  | Magma Keep | Fane of Lolth | Windswept Precipice | Drow Enclave | The Lost Temple (not tournament-legal)
Should you have questions, game experiences to share or you hope to meet people that play the game, find your way to the community in Discord or join the DDM Guild Facebook group.
For online play, Vassal, Tabletop Simulator and Roll20 have been used by the players.
Download Vassal here (2.1.1).
Here is the V3 module (until Arkhan set).
And here the DDM2 extension for more maps.
Roll20 is here.
Tabletop Simulator on Steam here.
Download the DDM Warband Builder here: