CURRENT UPDATE: v1.0.3 (11th May 2021) - see near bottom of this post for changelog
Project Osiris is a remake/reimagining of the Amiga FPS game Alien Breed 3D, using the GZDoom engine.
Alien Breed 3D was a valiant attempt at creating Doom but for the Amiga, a machine that really wasn't suited for such tasks. The pixels were huge and the viewport was tiny, but it was a technically impressive shooter considering the limitations. It even had some features over Doom - the water effects were amazing and it supported room-over-room and even texture-mapped 3D models. It was my first real experience of a proper 3D first person world in a video game so it was somewhat of a revelation to me. It may not be as tightly designed as Doom (honestly some of maps are pretty bad), but I have a lot of nostalgia for it, and it has a place in my heart.
So, I decided my first major Doom engine project would be to recreate it and also iron out some of the issues of the original, and hopefully make some improvements on the way. Having seen a few other attempts at remaking this game not reach fruition, I thought I'd step up to the plate and have a go at it myself!
- All 16 maps from the original game converted and adapted. The maps have been given aesthetic improvements, tweaked item and enemy placement and even some extra shortcuts, secrets and surprises, but they also remain true to the spirit of the original game. Look out for an additional secret map too, based on an obscure demo of the original game I found on Team 17's FTP server. The level has been expanded and now features an intense final battle. Keep your eyes peeled for those secrets!
- New textures and visual effects have been added. Dynamic lighting is used on many objects and some areas of the maps now have coloured lighting where appropriate. Additional textures have been added to denote teleporters, and doors that require switches to open (very handy on MAP11!)
- New HUD, designed not to take up most of the screen this time! It now fits into a familiar Doom status bar format, or a fullscreen HUD if you prefer maximum viewage potential.
- All 5 weapons from the original game, including new redrawn graphics and visual effects - also an additional one that didn't make it into the original game, the knife, for when you're out of ammo or you just feel like getting stabby. You can also switch back to the old weapon graphics if you're a fan of the hugest pixels!
- Various new items including body armor, small health packs, ammo drops and and map terminals have been added. All the old items now have new, shinier sprites too! And the original item graphics are included as an option if you want.
- All the original aliens are present and are angrier than ever. They now have diagonal angle views (the original game only had side, front and back,) some now have death animations where they didn't before, and some have been completely overhauled graphically. The two boss enemies are also back, now with new mechanics! Look out for those in MAP08 and MAP16.
- Three difficulty levels, that do more than just increase monster counts! The hardest setting will make the aliens that much more deadly, fast and accurate. If you just want to chill and kill some aliens however, an easier mode is there for you, offering you more protection against enemy attacks.
- A new soundtrack by me under my musical name, Null Divisor, featuring 17 music tracks in total. Contains a cover of the original tracker theme tune, and updated versions of the incidental music cues. The in-game tracks give a whole new sense of atmosphere to the game, featuring ambient soundscapes and occassional pumping electronic beats. Listen out for references to other music in the Alien Breed series too!
- Lots of additional sound effects added, such as new alien idle/death sounds, picking up items, elevator and door sounds, and more!
Do I need a Doom 2 WAD to run this game?
Nope! Simply run osiris.exe (just a copy of GZDoom) in the zip, or load the ipk3 into your existing GZDoom.
Why is there a copy of GZDoom in the download?
I expect people from the Amiga community who aren't necessarily into the Doom modding scene might be playing it, and I wanted to make things easier for them. Please note the included release is for Windows 64-bit - though you can run it on Linux and Mac if you get your own copy of GZDoom and put the ipk3 into it. If you're into Doom mods and running GZDoom already, feel free to just move the ipk3 into your usual place. Be sure to run it as an iwad, it's its own game!
Is this a 1:1 remake of the original AB3D?
No, lots of things are different either on purpose to hopefully improve the experience for a modern audience, or due to limitations of the engine or my coding ability.
Is it finished?
Yes! Though I will of course continue to update the game as necessary. I also plan to add more maps from coverdisk demos of the game, but these have a different visual style and different enemies and weapons, so they will take some more time to finish. Look out for these in the future!
Can you do Alien Breed 3D 2: The Killing Grounds next?
Nah, I was never really a fan of it, so the nostalgia isn't there for me. Sorry!
Thanks to Rayman the Hedgehog, Ozymandias81, Kinsie and DrPyspy for helping me out and/or letting me use stuff they made! Also HUGE shoutouts to John Girvin, whose work on extracting the original AB3D maps was basically vital for this project not to take a million years. There are further credits given inside the .ipk3 and/or during the end credits roll of the game.
This is my first Doom engine project and the first time I've released a big project to the world in general. Aside from the awesome help I've gotten this is mostly a solo effort by me, and I'm not a pro at game design or anything like that, so please bear with me if you have any problems!
Download Project Osiris v1.0.3
Note: If you're not using the included exe, please run the game as an IWAD/IPK3, not as a mod for Doom 2. GZDoom will pick it up as it's own game, or add the game as an IWAD to your launcher of choice.
Download Kinsie's Project Osiris Sounds
These are some crunchier sounds you can load as a mod, if you want a more retro Amiga-ey feel. Seperate thread about it here.