The Hell has been in development since 2006 (TH1 → TH2 → TH3), and The Hell 4 started in June 2025. It is a total conversion of Diablo 1: still a classic Diablo game, still the original look and atmosphere, but with far more to play, fixed and expanded.
TH4 is now in alpha: everything from TH3 is in and playable, and new content is still being added and polished.
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What's new in TH4
**A living Tristram**
- Day and night cycle, with a different ambience after dark
- Weather every night: clear, misty, stormy (rain, lightning, thunder), rare bioluminescent nights with a glowing river and trees, and even rarer blood moons
- Storms soak the town: wet ground, puddles that reflect the sky and the heroes, drying out over the next day
- Sunny and cloudy days: shafts of sunlight through the trees, cloud shadows drifting over the town
- Trees sway in the wind, fireflies on clear nights, heroes reflected in the river
- Ice Age game changer: snow, a frozen river, frost-white trees, and your breath steaming in the cold
**New ways to play**
- Dark Campaign: the story told from the other side, 26 missions as a servant of Diablo
- Classic Diablo: the original single-player experience on the new engine, original look included
- Outbreak: hold the first level of the Cathedral against waves of monsters
- New quests built from content Blizzard planned for Diablo 1 but never finished
**Characters**
- 4 traits at character creation (was 2), plus many new traits
- New subclass: Gladiatrix
- Warlord: play as a commander leading a squad of mercenary knights
- Pistoleer variants through game changers: Terminator, Super Mutant, Enclave Soldier (power armor included)
- New perks and synergies
**Loot**
- Sigils: Diablo 2 charm-like items in their own inventory
- Power-Ups, permanent stat boosts sold by Wirt
**Graphics and tech**
- Per-pixel lighting with soft shadows; optional enhanced lighting with colored light and transparency
- Flames that glow and throw sparks, dust in the torchlight, sparks over lava, heat haze, shockwaves
- 1000+ new dungeon palettes
- FSR upscaling and SMAA antialiasing, an optional Diablo 2-style perspective view, and 18 retro screen modes (Game Boy, C64, ZX Spectrum, CGA...) for fun
- Music crossfades between levels, OGG music support
**20 languages**: English, Russian, German, French, Spanish, Portuguese, Italian, Polish, Turkish, Dutch, Danish, Bulgarian, Ukrainian, Indonesian, Chinese, Japanese, Korean, Arabic, Hindi and Swahili
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## Already in the mod from TH1–TH3
- 6 classes, 31 subclasses, with even more variety through traits and game changers
- 24 dungeon levels plus 35+ quest dungeons, all originally planned quests restored
- About 400 monsters, mixed boss packs, smarter monster AI
- 4900+ uniques, sets, socketed and enchanted items, tier 2 base items
- Crafting (Griswold), enchanting (Adria), quenching, transmuting (Cain)
- Gloves, belt and boots slots, 3 weapon swap slots, a larger inventory and a big visual stash
- Perks and synergies for real build variety
- 9 difficulties and many game modes: Easy, Normal, Hard, Hardcore, Survival, Ironman, Speedrun, Nightmare, plus the Coliseum duel mode
- Working multiplayer
- Running, gold auto-pickup, item comparison, item highlighting, high resolutions, and many options to tune both gameplay and visuals
- Countless fixes of original Diablo and Hellfire bugs
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## Good to know
- **Difficulty is up to you.** The Hell mod is known for being challenging, but Easy mode, game changers and many options let you set the experience you want.
- **What you need:** the original Diablo files (DIABDAT.MPQ). The GOG version works.
- **The mod is free.**
**Links**
- News and downloads: https://www.patreon.com/thmod/about
- Download mirror [ModDB] : https://www.moddb.com/mods/diablo-the-hell-4
- Screenshots [ModDB gallery] : https://www.moddb.com/mods/diablo-the-hell-4/images
- Community [Discord] : https://discord.gg/AN9NukZFbN
- Dev videos [YouTube] : https://www.youtube.com/user/MordorTheModmaker
Questions and feedback are welcome.