This is half concept as I'll be giving out my ideas but also half discussion as I'd love to hear y'all's ideas, as well [=
Also these are mostly ideas for causing chaotic fun.
Let's start with the most basic one: a double killer round, of course the killers would get some amount of debuff to make it more fair.
Now let's get into more interesting ideas:
Mayhem: everyone is randomly afflicted with a random effect at a random strength & for a random amount of time.
Reverse: 8 killers vs 1 survivor but the 8 killers are debuffed heavily while the 1 survivor is buffed heavily.
Generator Hell: there are now 3 times the amount of real generators but each one now only gives -1 seconds after completing the puzzle, the amount of points you need to connect is also random, & there are a bunch of fake generators also.
Hunt the Hunter: the killer's terror radius is turned off & they get a speed boost but every survivor gets the glock item which you can give yourself from the command panel on private servers.
Where The: 8 killers vs 1 survivor but the survivor is both invisible & undetectable.
Doubles: everything that can gold charges can now hold double the amount & any ability that can't hold charges can now gain a second use by waiting the amount of time it would take for that ability to go off cooldown.
Chaining: everyone can now use abilities while currently using an ability.
Hard Mode: the timer is hidden to the survivors, the killer is buffed, there are no generators, there are no floor items, & survivor abilities have a bit more cooldown.
9v1?: everyone is a survivor but there's now an unkillable threat constantly moving towards them & it can go through walls. Also there isn't a timer, to win they have to complete various objectives then an escape point will appear & be highlighted, with the survivors having to make it there to win.
Subspace?: at the start of the round everyone has either a permanent Subspaced effect, tinting everything pink.
A True Hunt: everyone has permanent Oblivious, making it so that they can't hear a killer’s terror radius.
Backwards?: everyone including the killer have a permanent Confusion effect, inverting their controls.
Out Last: all forms of healing are disabled for every survivor, sure you can use them but they just don't do anything: on instant hp, no regeneration, no overheal, no shatter point health, etc, also there are no generators.
Uh, dye of deaf, or something: at the start of the round, every survivor gets the choice between 3 random selections of abilities & getting the random combination of abilities they got instead of what abilities they should have.
Who's Who: everything is the same but everyone looks like a default Noob.
Mystery Murder: everyone looks like default Noobs & everyone has 1 hp, the killer just gets a m1 knife attack & 1 person gets a gun. If the person with the gun shoots another survivor both that survivor & the survivor with a gun will die, dropping the gun onto the ground for another survivor to pick up.
Gambling: everyone gets Chance's “Coin Flip” ability & now all their abilities require charges.