✅ Last Updated: June 2026 | Verified this week
The Mad Murderer X is a round-based PvP horror game on Roblox by the group MAD STUDIO and the X reboot of their long-running Mad Murderer franchise. Each round of 12 players assigns one of three roles, Innocent who has to hide, Sheriff who carries a gun and one shot to identify the Murderer, and Murderer who carries a knife and is trying to wipe the lobby. Rounds last a few minutes, winning drops coins, and coins buy chests in the lobby that roll weapon and knife skins of different rarities.
The game launched in December 2021 and has crossed 131 million visits with around 6,800 players online at any time, over 192,000 favorites, and a verified MAD STUDIO group running it. Servers cap at 12 players per round so every game feels personal, and MAD STUDIO runs a tight anti-cheat that has kept the experience clean for years. This wiki covers how to play each role, round-by-round strategy, tips for new players, and the most-asked questions, plus links to the codes and scripts pages at the bottom.
The Mad Murderer X Overview
| The Mad Murderer X Overview |
| Game Name |
The Mad Murderer X |
| Developer |
MAD STUDIO |
| Genre |
Horror / PvP / Round-Based |
| Platform |
Roblox (PC, Mobile, Console) |
| Visits |
131M+ |
| Max Players |
12 |
| Release |
December 2021 |
How to Play The Mad Murderer X
- Join a server and wait in the lobby. You can buy weapon and knife skins from chests here between rounds.
- When the round starts, check your role. You are either Innocent, Sheriff, or Murderer for that round.
- If you are Innocent, hide, blend in with other players, and stay alive until the round ends. You have no weapon.
- If you are Sheriff, find and shoot the Murderer. You only get one gun and your shot has to be confident, since shooting an Innocent ends the round.
- If you are Murderer, eliminate the entire lobby with your knife while staying away from the Sheriff and pretending to be Innocent.
- Win the round to earn coins, then spend them on chests in the lobby. Better chests roll rarer knife and gun skins.
The Mad Murderer X Gameplay and Strategy
The smart way to play The Mad Murderer X is to learn all three roles, not just the one you like. Most new players camp the same hiding spot every round as Innocent, which works for a while but gets you killed once a regular Murderer learns the map. A better default is to keep moving, stay close to other players so you blend in, and never sprint, since sprinting is the most common tell that you are an Innocent panicking. Coins earned this way add up faster than coins earned by camping in a corner and getting found.
Sheriff is the highest-value role to play well because a fast confident kill ends the round in your team’s favor and shooting the wrong player throws the round to the Murderer. The key Sheriff skill is reading other players, not aiming. Watch for the player who keeps approaching others from behind, the one who sprints around corners, or the one who lingers near isolated spots, and save your shot for the second you are sure. Tossing the gun to a trusted Innocent if you cannot ID the Murderer is a real move, since the gun has to be picked up before the throw can do damage.
Murderer is the most fun role to play but the easiest to mess up. The play is to act exactly like an Innocent, walk at normal pace, hang near the edge of groups, and only swing the knife when you have a clean target with no Sheriff line of sight. New Murderers run straight at the first player they see, get spotted by the Sheriff, and lose the round in twenty seconds. Patient Murderers who wait for isolated targets clear the lobby every time. Map awareness matters here too, since the maps in The Mad Murderer X have specific corners where the Sheriff cannot see you knife someone.
Tips for New The Mad Murderer X Players
- Never sprint as Innocent. Walking is the safest tell. Sheriffs and Murderers both watch for the player who is panicking.
- Save your Sheriff shot. One wrong shot ends the round, but waiting for a clean read keeps you alive and earns the win.
- As Murderer, never knife in front of another Innocent. Witnesses tell the Sheriff who you are within seconds.
- Stick near groups of players. Innocents who walk alone get knifed first, every round.
- Save coins for the higher rarity chests. The skin pool in lower chests is much weaker than the seasonal chest pools.
- Join the MAD STUDIO group on Roblox for any group-only event rewards they drop during seasonal updates.
The Mad Murderer X FAQ
What kind of game is The Mad Murderer X?
The Mad Murderer X is a Roblox round-based PvP horror game by MAD STUDIO where each round assigns you Innocent, Sheriff, or Murderer at random. Innocents hide, Sheriffs try to ID and shoot the Murderer, and the Murderer tries to wipe the lobby with a knife. It launched in December 2021.
Who made The Mad Murderer X?
The Mad Murderer X was made by the Roblox group MAD STUDIO, a verified group that has run the Mad Murderer franchise since 2014. TMMX is the X reboot of their original game and Mad Murderer 2.
Is The Mad Murderer X free to play?
Yes, The Mad Murderer X is free to play on Roblox and works on PC, mobile, and console. Servers cap out at 12 players per round.
How do I unlock new knives and skins?
Winning rounds drops coins, and coins buy chests in the lobby that roll weapon and knife skins of different rarities. Seasonal events drop free skins too, so watching the in-game event banner during Halloween, Christmas, and anniversary windows is the fastest way to grow your collection.
Are there codes for The Mad Murderer X?
There are no codes for The Mad Murderer X right now. MAD STUDIO has never released a code in any Mad Murderer game and the lobby HUD does not have a Redeem Code box. Check the The Mad Murderer X Codes page for the live code tracker.