Arena has been remade in Unity.
Arena Rebuilt 0.9.1 is a modern reconstruction of The Elder Scrolls: Arena, built in Unity with the goal of preserving the original game while making it much easier to play on modern hardware.
The current beta has a fully traversable world including the starting dungeon, settlements, wilderness, interiors, dungeons and palaces, along with working day/night cycles, sky presentation, weather, combat, NPCs, services, character creation, inventory, quests, audio/music and the core RPG systems.
A big part of Arena Rebuilt is being able to choose how close to the original presentation you want to stay. The game supports Classic and Modern HUD styles, modern mouse/keyboard controls, controller support, modern resolutions and ultrawide displays, while still using the original Arena art and content derived locally from the player's own legitimate Arena installation.
Some of the current features include:
Classic and Modern HUD modes
Ultrawide and modern-resolution support
Modern keyboard and mouse controls
Controller support
Original character creation and starting dungeon
Seamless settlement and wilderness exploration
Large streamed wilderness areas
Enterable buildings, interiors and dungeons
Palaces and castle districts
Day/night cycles and sky system
Weather
Combat, enemies, equipment and inventory
Character classes, progression and magic systems
NPCs, dialogue and services
Quests, journal and automap systems
Original-style cinematics, music and audio
Local save system
Source-safe launcher that validates an original Arena installation
Arena Rebuilt does not distribute Bethesda's game assets. A legitimate compatible installation of The Elder Scrolls: Arena is required, and the necessary content is loaded/derived locally from those files.
The project is currently in Early Beta, so there are still bugs, presentation issues and original-game parity details being worked through. The major world and engine systems are now in place, with development increasingly focused on cleanup, validation and closing the remaining differences from the DOS original.
Modding support is also planned. A proper Mod API/SDK and mod-management system are intended for a later stage of development once the base game is stable, rather than exposing unstable internal systems during the beta.
Main site:
https://arenarebuilt.com
ModDB:
https://www.moddb.com/mods/the-elder-scrolls-arena-rebuilt-made-with-unity