Slendytubbies 3 inside Project Zomboid (Build 42). Single player.
Every zombie is a Newborn. Dipsy, Laa-Laa and Po hunt you, and Tinky Winky (slendy face) is the boss.
Headless Dipsy (chainsaw) and Mutant Laa-Laa are blind and hunt by sound. Classic Tinky Winky never walks: frozen in his T-pose, he gets closer every time you look away.
Po starts out normal, then turns into Mutant Po and throws acid. Shadow Tubby comes out at night with his dark powers and his own music.
Find the 10 Tubby Custards hidden in nearby houses to win. Slendytubbies 3 jumpscares and music throughout.
Roles from other games, each with their own look, weapons (new items: Zomboid's own weapons are untouched) and voice:
Tubby Soldier and The Guardian (the white Teletubby, with his chainsaw and lit flashlight), from Slendytubbies 3.
Postal Dude, from your POSTAL 2.
James Earl Cash, from your Manhunt, with the Director in his ear.
Gordon Freeman, from your Half-Life: HEV suit, crowbar, 9mm pistol, .357, MP5 and shotgun, and the HEV suit's voice.
Counter-Terrorist, from your Counter-Strike 1.6: SEAL look, knife, USP, M4A1, AK-47, AWP, Desert Eagle and M3, plus the radio voice.
Sandbox page "Slendy Knox": choose which monsters appear.
Everything is read from your own copies of the games on the first Play. Nothing from them is included.