Nobody expected a Roblox Halloween event to hand out homework, yet here we are. To get Festering Felix in The Hollow, you have to sneak through a haunted maze, read eight tombstones, do eight subtraction problems and type three tiny icons into a coffin, all while something with teeth wanders the halls. Math class never had a jump scare, so this is a step up. This guide shows you exactly how the Floor 3 grave puzzle works, how to calculate your own answer, what order the lock wants and how to get out alive with your free head accessory.
⚡ Quick Answer
Ride the hub elevator to Floor 3 and find the Demonology room. Subtract each grave's birth year from its death year, pick the three youngest graves and enter their icons from youngest to oldest. Take the relic, run back to the elevator and exit to the lobby to unlock Festering Felix.
What Is Festering Felix in The Hollow?
Festering Felix is a free head accessory from The Hollow, Roblox's Halloween 2026 event. It is tied to Floor 3 of the hub maze, the floor themed around the horror game Demonology, and it is the reward for the third relic puzzle. The item is reported as untradable, which means it is yours to wear and not yours to flip. The event runs for nine nights, and each floor stays open until the claim window closes at noon Pacific on November 2, so you can still earn it even if you are arriving late to the party.
"Exclusive UGC and rewards that can help them survive another night."
Survival is the keyword there. Felix is not handed out for standing around the lobby. You earn him by solving a puzzle that changes for every player, which is great for stopping copy and paste answers and terrible for anyone hoping to screenshot a solution and go to bed.
What Do You Need Before You Start?
Not much. You need The Hollow hub, a character that can sprint and a piece of paper or a notes app. Yes, really. The puzzle asks you to remember eight sets of numbers and icons, and your brain is busy listening for footsteps. If you have not done Floors 1 and 2 yet, they work on the same relic idea, and our Day 2 guide covers how those rewards work.
- Access: the main theater lobby of The Hollow hub, which holds the elevator.
- Floor: Floor 3, the Demonology floor.
- Tools: a notes app, a pen or a phone camera for screenshots.
- Time: a single clean run is short, but the maze resets if you get caught, so give yourself a calm window.
- Deadline: noon Pacific on November 2, 2026.
How Do You Get Festering Felix Step by Step?
- Enter the elevator: go to the main theater lobby of The Hollow hub and step into the elevator.
- Pick Floor 3: choose the third floor from the panel.
- Cross the maze: run through the randomly generated hallways and look for the Demonology room. The layout changes for each player, so you have to find it yourself.
- Avoid the roaming monster: if it catches you, your progress resets and you start again from the beginning.
- Inspect all eight graves: for each tombstone, write down the icon, the birth year and the death year.
- Work out each age: subtract the birth year from the death year for every grave.
- Pick the three youngest: find the three graves with the smallest ages.
- Use the coffin lock: enter the three icons from the youngest grave to the oldest. Order matters.
- Take the relic: a correct code opens the coffin and gives you the Floor 3 relic.
- Run back and exit: sprint back through the maze to the elevator, ride up and step out into the lobby. The badge pops up and Festering Felix lands in your inventory.
⚠️ Important: Do not leave the moment the coffin opens. The reward arrives when you step out of the elevator in the lobby. Getting caught on the way back can reset the run, even with the relic in your hands.
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How Does the Floor 3 Grave Puzzle Work?
The idea is simple even if the setup is spooky. Each of the eight graves shows an icon and two years. Your job is to turn those years into ages and rank the graves from youngest to oldest. The three youngest icons are your code. The math is plain subtraction, so there is no trick beyond staying calm.
💡 Pro Tip: Use this formula for every grave: death year minus birth year equals age. Write the age next to the icon straight away, so you never have to redo the math with a monster breathing down your neck.
A sample run, fully worked out
Your graves will not match these, because the ages and combinations are randomized for each player. Treat this table as a practice round so the method clicks before you walk in.
| Icon | Lifespan | Age Calculation | Age |
|---|---|---|---|
| Pumpkin | 1868 to 1906 | 1906 minus 1868 | 38 |
| Cat | 1870 to 1911 | 1911 minus 1870 | 41 |
| Broom | 1816 to 1858 | 1858 minus 1816 | 42 |
| Bat | 1853 to 1896 | 1896 minus 1853 | 43 |
| Wizard Hat | 1839 to 1884 | 1884 minus 1839 | 45 |
| Cauldron | 1791 to 1837 | 1837 minus 1791 | 46 |
| Ghost | 1809 to 1856 | 1856 minus 1809 | 47 |
| Spider | 1804 to 1855 | 1855 minus 1804 | 51 |
In this sample, the three youngest graves are the Pumpkin at 38, the Cat at 41 and the Broom at 42. So the lock gets Pumpkin first, Cat second and Broom third. Notice how close the numbers run. A Bat at 43 sits one year behind the Broom, which is exactly the kind of near miss that wrecks a rushed run.
📊 Key Stat: There are eight graves and the lock wants three icons in a fixed order, which gives 8 x 7 x 6 = 336 possible codes. Guessing blindly would take you hundreds of tries, and the maze is not patient. Doing the subtraction takes about a minute.
When I worked through the sample numbers myself, the thing that jumped out was how easy it is to grab the wrong grave by trusting the icon alone. The Bat and the Broom look equally spooky, but one year of difference decides whether you open the coffin or restart the maze. I would write every age down in a list sorted from smallest to largest before touching the lock.
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How Do You Survive the Floor 3 Monster?
Floor 3 belongs to Biter, the monster borrowed from Demonology. A roaming entity patrols the maze, and the rule is blunt: if it catches you, your progress resets and you start again from the beginning. The reset is the real danger here, because the grave math is easy and the long run back to the elevator is where runs die.
- Solve first, sprint later: finish your notes in the Demonology room before you worry about the exit.
- Learn the way out: glance at each turn on the way in, since you have to retrace it.
- Listen and watch: stop at corners and peek before you cross open hallways.
- Do not panic route: a calm known path beats a random shortcut in a maze that changes per player.
- Keep moving after the coffin: the return trip is the dangerous part.
If you do get caught, take a breath and remember that your grave answers may reset with the run, so double check your numbers before you enter the lock again.
How Do You Claim Festering Felix and Check That It Worked?
The item arrives when you leave the elevator in the lobby, not when the coffin opens. A badge notification pops up and Festering Felix is added to your inventory. If nothing appears, you probably have not finished the progression. Go back, make sure the relic is collected and ride the elevator out again. You can then open your avatar items and look in the head accessories section.
- Exit the elevator: stand in the main theater lobby with the relic collected.
- Watch for the badge: the notification should pop up right away.
- Open your inventory: find Festering Felix under your head accessories.
- Equip it: try it on before the event ends so you know it works.
What Else Is Reported for Day 3?
Festering Felix is the Floor 3 item, but the Day 3 conversation does not stop there. One Day 3 roundup lists five items in total: Festering Felix, Biter Fedora, Cowboy Hat of the Dead, Mr. Trick or Treat and Burned Necrobloxicon. I could only verify the steps for Felix, so I will not invent routes for the other four. Treat that list as reported, and check the reward board in the hub for what is live for you.
| Item | Status | What I Can Confirm |
|---|---|---|
| Festering Felix | Steps covered here | Floor 3 grave puzzle, head accessory |
| Biter Fedora | Reported | Listed for Day 3, steps not verified |
| Cowboy Hat of the Dead | Reported | Listed for Day 3, steps not verified |
| Mr. Trick or Treat | Reported | Listed for Day 3, steps not verified |
| Burned Necrobloxicon | Reported | Listed for Day 3, steps not verified |
What Mistakes Should You Avoid on Floor 3?
- Copying someone else's code: your graves are randomized, so another player's icons will not open your coffin.
- Entering the wrong order: the lock wants youngest to oldest, and two correct icons in the wrong order still fail.
- Checking only some graves: read all eight before you rank them.
- Mixing up the years: subtract the birth year from the death year, never the other way around.
- Leaving too early: the item only unlocks when you exit the elevator in the lobby.
- Waiting for the last hour: the claim window closes at noon Pacific on November 2, and the hub gets crowded late.
Most failed runs come down to rushing. The puzzle itself is a maths worksheet in a costume, and the monster is only dangerous if you wander.
Frequently Asked Questions
How do you get Festering Felix in Roblox The Hollow?
Take the hub elevator to Floor 3 and find the Demonology room. Calculate the age of all eight graves, pick the three youngest and enter their icons into the coffin lock from youngest to oldest. Grab the relic, return to the elevator and exit into the lobby to unlock the item.
How do you unlock Floor 3 in The Hollow?
Floor 3 is the third floor on the hub elevator and unlocks with the Day 3 release on October 24. Each day adds a new floor and a new monster, and every floor stays open until the event closes, so you can still reach it today.
How do you calculate the grave ages?
Subtract the birth year from the death year on every tombstone. For example, a grave from 1868 to 1906 gives 1906 minus 1868, which equals 38. Do this for all eight graves, then rank the results from smallest to largest and take the first three.
What order does the coffin lock use?
Enter the three icons in order from the youngest grave to the oldest of the three. If your youngest three are a Pumpkin at 38, a Cat at 41 and a Broom at 42, the code is Pumpkin, Cat, Broom. Entering them in any other order will not open the coffin.
What happens if the monster catches you?
If the roaming monster catches you, your progress resets and you must start again from the beginning. The reset applies even after you have the relic, so be careful on the run back to the elevator. Double check your grave answers if the layout changes.
Is the Floor 3 puzzle the same for everyone?
No. The maze layout, the grave ages and the icon combinations are randomized for each player, so you must do your own math. A sample answer is useful for practice, but copying another player's icons will not open your coffin.
When does The Hollow event end?
The Hollow runs from October 22 to the live finale on October 31. Rewards can be collected until noon Pacific on November 2, 2026. Each floor stays open until then, so you can finish earlier floors late, but you should not leave Festering Felix to the final hour.
Your Festering Felix Game Plan
Festering Felix comes down to four moves: reach Floor 3, read the graves, do the subtraction and run home before the monster does. Write your numbers down, enter the youngest three icons in order and exit through the lobby to lock in the badge. Do it early, because the claim window ends at noon Pacific on November 2. Then put the head accessory on, stare into the mirror and tell your math teacher it finally paid off.
📚 Sources & References
- The Hollow Halloween Survival Event, Roblox Newsroom, October 2026
- How to Get Festering Felix Badge (Third Relic) in The Hollow, Treyex Gaming
- All Roblox The Hollow Items and Event Details, GamesRadar
- How To Complete All The Roblox The Hollow Quests, Gamezebo
- The Hollow Roblox Puzzle Guide, The Hollow Roblox Wiki
- [EVENT] How to get FESTERING FELIX in THE HOLLOW HUB, Conor3D on YouTube
