DU3L Game Modes
DU3L is one combat engine, many ways to fight — competitive online duels, a roguelite dungeon, survival waves, daily trials, couch PvP, an AI battle lab and a full map-building Forge. Every mode below is playable today in your browser.
Ways to play
Online PvPCompetitive
Duel real players in real-time tactical combat. Queue for Quickplay, create a private lobby with a shareable link, or browse persistent public arenas in the Arena Browser.
DESCENTRoguelite PvE
Explore a procedurally generated dungeon, fight roamers across shifting biomes, gather relics and defeat the Warden.
TrialsDaily & weekly
Timed daily challenges plus a weekly expert gauntlet — chase scores, clear missions and earn season rewards.
PvE SurvivalWave combat
Hold the arena against escalating waves of AI opponents with boss fights mixed in.
PvP LocalSame keyboard
Two players, one device — classic couch duels with full loadouts on both sides.
SimulationAI battle lab
Watch AI-controlled duelists fight live, tune bot profiles and run batch simulations to analyze weapon and matchup performance.
Practice & Target PracticeTraining
Learn the controls, test loadouts against dummies and sharpen aim in two offline training modes.
The ForgeCreate
Build your own arenas, remix generated maps and design custom timed or survival challenges.
WorkshopCommunity
Discover, rate and play arenas and challenges built by other players.
Inside DESCENT
DU3L's roguelite dungeon mode — procedurally generated floors, relic powers and the Warden waiting below.
DESCENT turns DU3L's duel engine into a run-based adventure: each floor is generated fresh, roamers patrol rooms, and relic choices reshape how your loadout fights. Fall, and the run resets — reach the bottom and the Warden is waiting.
Where should you start?
- Brand new? Run the tutorial, then a few rounds of Practice — our How to Play guide covers controls and combat basics.
- Want competition? Quickplay finds you a duel, and the Arena Browser lists persistent public rooms.
- Prefer solo? DESCENT, PvE Survival and Trials all fight AI, no account needed.
- Like to tinker? The Sim Lab experiments with AI matchups, and the Forge plus Workshop let you build and share arenas.
Ready to duel?
DU3L runs entirely in your browser — free, no download, no install.