ZDoom project ideas you have

[napala]

Idea for a secret level:
Heaven.

You'd access this level via a hidden teleport or some sort of requirements. Doomguy gets teleported to heaven (not necessarily having died though).
There you see the typical pearly white cloudy heaven. "Formers" (not really former humans anymore) with halos on their heads are walking around, unbothered by anything.

You find a building, you enter and it is a bar. "Formers" are sitting around, some are drinking, some are chatting with eachother. A Captain is laughing hard cheerfully. A bunch of Sargeants gather around a Zombieman, seemingly shouting "CHUG CHUG CHUG" while the Zombieman drinnks from a never-ending barrel of beer. Suddenly, in between your legs a small furry creature appears. It's Daisy! She's alive! Well, not really. But you can pet her, and as you continue walking, she's constantly following you, hopping all around the place.
Another Zombieman sees you and salutes; a Sargeant with the friendliest face you ever seen seems surprised for a moment, then happily greets you; he's an ol' friend from the space marines. Everything here is fine and dandy.
After a while, you leave the bar and then a mysterious humanoid figure stands in front of you. A loud booming voice says that you're not supposed to be there, at least not yet. "You've earned your place here, but you still have lots to do in the realm below", it announces.

Suddenly you feel yanked downwards. You progress to the next level, back again in hell, not entirely sure if that was actually heaven, or just a dream. Either way, it's time to resume the killing of demons.

[DoomThing445]

A basic Colourful Hell equivalent mod for weapons.

Edit: Specifically, colors would have their own ammo types, too. So if you wanna use a blue shotgun for longer than a few moments for instance, you'd need to gather blue shells and blue shellboxes.

[Femidoom]

i've had this idea in my head for a long while. It's a mod that takes any custom weapons and replaces them with their basegame equivalents via checking the weapon's slot. [slot 1 weapons replaced with chainsaws, slot 3 weapons being 50/50 replaced with shotguns and supershotguns, etc.] to allow gameplay mods to stack on top of eachother (like byoc characters in reelism or weapon mods in TCs)

[IndependentAutist2]

A project idea I have is basically illustrating my life experience in DooM, using grayscale textures to represent lack of experience/Isolation, doors that require monsters bumping them to open representing Co-dependency and deliberately bad level design representing mental health problems.

I'm not trying to say that I'm trying to pull a "MyHouse 2.0", but I was inspired by MyHouse.pk3 to make an expressionist art piece in DooM.

[INTP O_0]

Well, my idea isn't really a doom wad or level or anything, it's moreso, how can I make a doom clone but have the exact same features as zdoom? It's basically your run-of-the-mill boomer shooter with a story mode. I was very inspired by the likes of other games like duke nukem, or powerslave or rise of the triad but with brutal doom like features. But I have no idea how I would go about doing that. I would use any other game engines, but I feel like they are bloated and would make it a bit more challenging because of the modern features they provide or something idk like I want to be constrained to those old boomer shooters and just develop inside those restrictions.

[schkorpio]

I was watching some gameplay of The Super Spy (and yes I know there is a mod) but I wondered what it would be like if all of DooM had the graphics style of peak Neo Geo era.

[Shatter-Thought[V-4]]

I have an idea for a kind of universal segmented shielding mod that would give bosses (Or any monsters with over 1000 hitpoints at any rate) invincibility except for damage from a randomly selected weapon, IE when the level loads, the mod gives any "boss" monster a scripted weakness so only when a weapon from a specific slot is equipped, they will take damage.

Could have different phases, taking only damage from one weapon for some of their health then switching to a different weakness.

Kind of an insane idea but I think it may work, though it would be odd with multi-weapon filled slots, though that's not the worst oversight as it still encourages a player to switch to something in said selected slot to hurt a boss.

For a safety mechanism, the invincibility can be broken by a select amount of damage from other weapons, and said damage could be by default 500 while being changeable in the options.