Prepare yourself for a grand adventure! Ultima™ IV, sixteen times larger than Ultima™ III, is a milestone in computer gaming. Lord British has produced a game to challenge not only your physical and mental skills, but the true fabric of your character. The evil triad of Mondain, Minax, and the hellspawn Exodus have been vanquished and peace reigns throughout the land of Britannia. Evil yet abounds, but in isolated pockets and in the hearts of men. A new age awaits the coming of one who can conquer evil on all frontiers through mastery of both magic and the use of force. Daemons, dragons, and long-dead wizards still plague the countryside and must be destroyed. The seeker on the path of the Avatar will face hostile groups composed of mixed enemy types and will survive such encounters only by strategic use of weapons and terrain. Earthly victories over seemingly impossible odds lead to the final conflict, where the ultimate challenge - the self - awaits.

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Take a look at this screenshot:

spot the differencesHow many differences can you spot between it and vanilla Ultima IV for dos?


10 points if you can spot 10!

OKay, some are old, or have been shown in previous screenshots. Howver, several are new, and represent some work done recently.

  • One is the avatar. Look at it carefully. Dos colors, with true Apple II form.
  • Another is the frame. Dos colors, but the shape is the Apple II version.
  • Fonts are changed as well. Dos colors, but fonts straight from Apple II version.
  • The Ankh is bright white, rather than dull white.
  • The 'dungeon' floor tile, outside the window, is properly balanced and not wonky like in the dos version. Closer to Apple II version once again.
  • Perhaps last, but not least...the ray casting! Dos version's ray casting was nearly non existent. Now we have something much closer to the Apple II original.

Tweaking/Improving the raycasting was no small chore. And it is not done yet. I think it represents one of the major differences between the dos port and the original Apple II version. I didn't really realize how big a change it was until I started tweaking it. There was always something about the Apple raycasting, that lent to the danger of the adventure. Perhaps it was that the screen was always a little darker, perhaps it was that you couldn't see what lurked around the corner. Whatever it was, I liked it, and getting it going in Trinity is on.

Here are some gifs comparing the two versions of the algorithm I have come up with, with the original dos and Apple II versions. Neither is a perfect replica of the Apple 2 algorithm, but they are much closer than dos. The funny thing was, I barely modified the dos algorithm. Only the tiniest tweak, almost like fixing a typo, was enough to make the algorithms effects align very closely with the Apple IIs. Odd.

ray cast ver 1Ray Cast Version One


ray cast ver 2Ray Cast Version Two


ray cast ver appleRay Cast Apple II Version


ray cast ver originalRay Cast Original Dos Version


I definitely like both my new algorithms, but which is better...Hmmm...Kinda leaning toward version 2...

Random Encounters

Random Encounters

Advent of the Trinity 1 comment

Random Encounters have been added, but do they mess with the default too much?

Polishing

Polishing

Advent of the Trinity

Things still happening. A lot of polishing of locations, dialogue and code.

Oracles Gone!

Oracles Gone!

Advent of the Trinity

Oracles have been removed in favor of a simpler, canonically truer, overall mod.

Shock!

Shock!

Advent of the Trinity

Ultima IV dos is too easy!? Apple II Ultima IV, the original, appears to be harder than dos Ultima IV.

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Ultima IV Solo Patch

Ultima IV Solo Patch

Patch

This patch allows one to complete Ultima IV with only one character (the PC). This is offset with increased combat difficulty, matched to the original...

Ultima IV: Dragon

Ultima IV: Dragon

Ultima IV: Dragon Full Version

This is the full, initial release of the 'Dragon' mod for Ultima IV.

Hythloth Fix

Hythloth Fix

Patch

A fix for the Hythloth level 6 impassable rooms bug.

Comments
cambragol
cambragol

I will assume you are referring to me, as my files and articles are the only ones here on the Ultima IV page.

Glad to hear you like what you see so far! Still lots of work going on everyday. Polishing, bug hunting, polishing, occasional feature addition etc.

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Guest
Guest

THIS IS SO AWESOME. You should join and post to the 'Ultima Dragons Internet Club' (UDIC) on Facebook, plenty of people there would LOVE to hear about this!!!!

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Ultima IV: Quest of the Avatar
Platforms
DOS, NES
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Origin Systems Inc
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