Zombie Typing Game — asset credits
All assets in this folder are CC0 1.0 Universal (public domain dedication) — free for commercial use, credit not required.
License text: https://creativecommons.org/publicdomain/zero/1.0/
Licenses were checked on each source page on 2026-09-27.

SPRITES
Sprite strips were re-packed from the original Doom-style frames: the front-facing (rotation 1) frames of each
animation were placed side by side in one row with their feet aligned. Pixels were not redrawn.

walker.png   "Husk Mutant" by HorrorMovieRei
             https://opengameart.org/content/husk-mutant
runner.png   "Psycho-man" by HorrorMovieRei (tinted pale green in the game)
             https://opengameart.org/content/psycho-man
tank.png     "Evil Oogie" from "FPS Monster Enemies" by Ragnar Random
boss.png     "Demonario" from "FPS Monster Enemies" by Ragnar Random
             https://opengameart.org/content/fps-monster-enemies
             (the author notes these are derivative of prior CC0 works by surt and NMN)
pistol.png   "FPS Weapon Sprites" by Ragnar Random (pistol frames 5, 2, 3, 4, cropped)
             https://opengameart.org/content/fps-weapon-sprites
props.png    objects.png from "GothicVania Cemetery Pack" by Luis Zuno (ansimuz)
sky.png      background.png from the same pack
             https://opengameart.org/content/gothicvania-cemetery-pack

The ground, iron fence, barricade planks, lamp posts and supply crates are drawn by the game code.

SOUNDS (converted from OGG/WAV to MP3, trimmed and loudness-normalized)
audio/groan1-3.mp3       "Undead Moans" by AntumDeluge          https://opengameart.org/content/undead-moans
audio/groan4.mp3,
audio/runner.mp3         "Zombie noises and moans" by ianzazz   https://opengameart.org/content/zombie-noises-and-moans
audio/death1-2.mp3,
audio/roar.mp3,
audio/bossdeath.mp3      "16 Monster Growls" by StarNinjas (roar and bossdeath pitched down)
                         https://opengameart.org/content/16-monster-growls
audio/shot.mp3, hurt.mp3, pickup.mp3, explosion.mp3, freeze.mp3
                         "Wolfclone Sound Pack" by A Dev's Diary https://opengameart.org/content/wolfclone-sound-pack
audio/music.mp3          "Horror Loop" by TinyWorlds            https://opengameart.org/content/horror-loop
audio/boss.mp3           "Evil3 - Apocalypse" from "JRPG Pack 3 [Evil]" by Juhani Junkala (SubspaceAudio)
                         https://opengameart.org/content/jrpg-pack-3-evil

The shell-casing clink and the miss sound are synthesized in the browser (Web Audio). The "Here they come!" line uses the
device's own speech voice (Web Speech API).