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Other/Misc

Ultra Testing Tools

RizoBoyAuthor on GameBanana
Updated Feb 2026v1.3.3
Installs
20,054
Likes
18
Comments
16
Updated
Feb 2026
GameBanana ↗Manual downloadMod ManagerOne-click install
How to install →
CategoryOther/Misc
Versionv1.3.3
Size213.6 MB
Submitted4 Jun 2025
Updated4 Feb 2026
InstallVPK drop

Ultra Testing Tools — other/misc for Deadlock

This mod, based on Better Testing Tools , enhances the original with a ton of additional features. Features: Hero control options Customizable game rules HUD modifications Entity/Prop spawning Neon Prime asset spawning Hero stat leveling and customization Hero status/effect setting Skybox switching Playability with unreleased heroes Access to unreleased skills Randomize Hero Unlocking hidden shop items Enhanced and Legendary Items Street Brawl Gamemode Please Note: Some features are working for solo play and may not function properly in party mode.

Compatibility

Model replacements are the first thing to break when Valve edits a skeleton, so re-check after each patch. It conflicts with any other mod replacing the same asset — two in the addons folder means whichever loads last wins, and the other one silently does nothing.

Is it safe

It is client-side: the file lives on your machine and other players see the default game. Cosmetic addons have not produced bans, but Deadlock is in active development and nothing about mods is officially supported. Keep a copy of the folder before a patch and remove it if the game stops launching.

Credit

Made by RizoBoy and published on GameBanana. We index it here with a link back; the file, the licence (CC BY-NC-ND 4.0) and the comment thread stay with the author. Credits

Mod details
TypeOther/Misc
HeroNot hero-specific
AuthorRizoBoy
Scope—
SoundsUntouched
LicenceCC BY-NC-ND 4.0

Frequently asked questions

How do I install Ultra Testing Tools?▾
Two ways. With Deadlock Mod Manager, use the Mod Manager button on this page and it downloads and places the file for you. By hand, put the .vpk into game/citadel/addons and name it pak01_dir.vpk. That folder only loads once gameinfo.gi lists it, which is a one-time edit — check the install guide.
Is Ultra Testing Tools safe to install?▾
A .vpk is a data archive, not a program, so it cannot execute code the way an installer can. The risk is provenance. This one has 20,054 installs, so a problem would have surfaced on its GameBanana thread. Mods with almost no downloads from accounts with no history have had none of that scrutiny.
Will other players see this mod?▾
No. Deadlock loads mods client-side, so the file only changes what you render. Everyone else sees the default game, in every mode including ranked.
Can I run it alongside other mods?▾
Yes, as long as they change different things — a skin and a HUD work together fine. Two skins for the same hero do not: only one can be applied, and Deadlock picks the lower-numbered file. With pak01_dir.vpk and pak02_dir.vpk installed, pak01 wins and the other does nothing.
Does it still work after the latest patch?▾
A Deadlock patch can overwrite gameinfo.gi and remove your search paths, which stops every manually installed mod at once — redo that edit and they come back. Separately, model replacements break first when Valve edits a skeleton; recolours and HUD mods usually survive. The author posts updates on the GameBanana page.
Where does the download come from?▾
Directly from the author's GameBanana page. deadlocktrade.gg indexes mods and links back; it never rehosts files, so you always get the release the author published.
How do I remove Ultra Testing Tools?▾
Delete its .vpk from game/citadel/addons, or toggle it off in the Deadlock Mod Manager library. Mods never overwrite game files, so nothing needs repairing afterwards.