PETAPETA The Hollow event guide: 2026 crossover steps and rewards

The Hollow is PETAPETA's limited-time crossover event, and it drops you into a nightmare hotel where every floor hides a different kind of scare. This PETAPETA The Hollow guide breaks down the full route, the reward payouts, and the mistakes that cost most players their first clear.

The event runs on a fixed timer, so knowing what waits on each floor before you step in matters more than raw reflexes. Below you will find the floor order, the item checklist, the reward table, and the small tricks that turn a stressful run into a clean one.

What the PETAPETA The Hollow event actually asks of you

The Hollow is a survival-style event map rather than a combat gauntlet. You move through a hotel that rearranges itself between floors, collect Room Keys to open locked doors, and reach the rooftop exit before the Nightmare Timer expires. There is no boss health bar to grind down — the threat is the environment, the darkness, and a handful of roaming entities that react to sound and light.

Because the event is a crossover, it borrows presentation ideas from horror games while keeping PETAPETA's movement and interaction systems intact. That means your normal sprint, crouch, and interact bindings all work, but stamina drains faster in the dark and some doors only respond to specific items.

Here is the core loop in plain terms: Front Desk Ledger first, then floor-by-floor key collection, then the rooftop dash. The Ledger is not decoration — it stamps your first three objectives onto the HUD, and those objectives dictate which locked doors are worth opening versus which Room Keys you should save for the next floor. Fuse Cells gate the elevator between floors, so a run that skips one to save time usually stalls two floors later and burns more of the Nightmare Timer than it saved. The rooftop exit only registers once the final fuse is seated, which is why speedrunners route Fuse Cells before optional key rooms rather than after.

• Enter the lobby and pick up the Front Desk Ledger, which marks your first three objectives.

• Clear floors in order, collecting keys and Fuse Cells as you go.

• Reach the rooftop before the timer hits zero to bank your rewards.

• Repeat runs to farm tickets, since payouts scale with clear speed and floors completed.

According to community reports, the average first-time clear takes around 22 minutes, while experienced players finish in 12 to 14. That gap is almost entirely route knowledge, not skill — veterans have simply memorized which floors spawn the Front Desk Ledger objectives near a Fuse Cell and which Room Keys can be skipped entirely. A first-timer typically wastes three to four minutes backtracking after opening a door that leads nowhere, whereas a routed run chains the lobby Ledger pickup straight into the elevator fuse without detouring into optional key rooms. The Nightmare Timer punishes that indecision hardest on floors two and three, where darkness slows your stamina recovery and roaming entities force crouch-walks that eat clock time.

Event availability and entry requirements

The Hollow opens from the event menu once you have finished the tutorial chapter, so new accounts cannot jump in immediately. You need at least one completed story chapter to unlock the mode, and the event uses its own separate save state — nothing you do inside carries risk to your main progression.

The Hard tier is where the real rewards sit, but it also removes the objective markers after floor three, so from that point you are navigating the Hollow's corridors on memory and audio cues alone. Because Hard only unlocks after your first clear, treat Normal as a layout-learning pass: run it until you can reach extraction without opening the map, then switch over. The 25-minute run timer punishes hesitation more on Hard, since a wrong turn costs both seconds and the key pickups your duo needs.

Floor-by-floor route through the nightmare hotel

The hotel has five floors plus a rooftop, and each one has a distinct gimmick. The layout is fixed per tier, so once you learn the room order you can move on autopilot. A full PETAPETA Hotel walkthrough covers the map geometry in more detail, but the short version is below.

The single biggest time saver is knowing which floors are skippable. Floor two and floor four both have optional side rooms that only contain cosmetic collectibles — skip them on timed runs and come back on a relaxed pass. On Floor 2, the side rooms branch off the guest-room corridor before you reach the Brass Master Key, so detouring costs roughly 90 seconds you cannot reclaim against the 5-minute budget; the same applies to Floor 4's alarm-panel detours, which pull you away from the Security Card with only 4 minutes on the clock. Bank those two skips and you effectively gain a full minute of slack for the flooded-corridor Valve Handle on Floor 3, the section most likely to eat your margin.

Floor 1: restoring the elevator power

Two Fuse Cells sit in opposite wings of the first floor, and the elevator will not move until both are slotted into the breaker box near the stairwell. The east cell is easy — it is on a desk in the first office. The west cell is behind a door that only opens after you flip the light switch in the corridor, which is the first real puzzle of the run.

Flip the switch, wait for the flicker to settle, then grab the cell. Rushing the door before the lights stabilize will leave you standing in the dark with a locked handle, and the roaming entity on this floor is attracted to repeated interaction sounds. Two or three failed pulls is enough to bring it over.

Floors 2 and 3: keys, water, and the valve

Floor two is a search floor. The Brass Master Key spawns in one of four guest rooms, and the room is randomized per run — but the key is always on a nightstand, never in a drawer. Check nightstands first and you will cut this floor down to under three minutes.

Floor three floods the main corridor, and you cannot swim through it. Find the Valve Handle in the maintenance closet, turn the wheel near the stairwell, and the water drains over about fifteen seconds. Use that waiting time to top up stamina rather than standing at the drain, because the next floor starts immediately.

The Hollow PETAPETA walkthrough: items and Survival Kit

The Survival Kit is the event's central progression system. Every run you complete adds components to it, and a fuller kit makes later runs noticeably easier. Think of it as a permanent upgrade track that only applies inside The Hollow.

You earn kit components by clearing floors, not by killing anything. A full clear on Normal grants three components, a Hard clear grants five, and a fast clear under 15 minutes adds a bonus component. The kit caps out after roughly twelve full runs, which is when the mode shifts from tense to comfortable.

The Emergency Keyring is the single most valuable unlock because it can hand you the Brass Master Key for free, effectively deleting floor two from your route. Prioritize components toward it if you plan to farm Hard clears. At 11 components, it sits just below the Full Kit Bonus threshold, so the most efficient path is to bank three Normal clears (nine components) plus one fast Hard clear (six components) to cross it in four runs instead of grinding twelve. Once active, the random key spawns on run start rather than after floor one, giving you the option to skip the locked side room entirely on speed-focused attempts.

Which items are worth carrying

Inventory space inside The Hollow is limited to four slots, so every pickup is a tradeoff. The Flashlight and Valve Handle are mandatory and cannot be dropped. That leaves two flexible slots, and the best fillers are batteries and a spare Fuse Cell.

Do not pick up cosmetic collectibles during a timed run. They occupy a slot, they do nothing mechanically, and the PETAPETA Hollow badge guide explains that most of them only matter for the collection badge anyway. Grab them on a slow pass after you have banked your ticket rewards.

Rewards, tickets, and what a full clear pays out

Rewards in The Hollow come in three currencies: Event Tickets, Hollow Badges, and cosmetic unlocks. Tickets are the practical currency — they buy the event shop items. Badges are achievement-style trophies tied to specific feats. Cosmetics are purely visual. The split matters because each currency has a different bottleneck: Tickets are capped by clear volume and the under-15-minute speed bonus, Badges are gated by one-off feats you can't grind, and cosmetics trickle in through the daily first-clear crate. In practice, a single Normal clear pays 40 Event Tickets plus 3 Kit Components, while a Hard clear pays 90 Tickets and 5 Components — so Tickets and Kit Components scale together, but Hollow Badge progress only moves when you deliberately chase the feat tied to that badge.

The payout formula rewards two variables at once: difficulty tier and clear speed, and the under-15-minute bonus is where the math gets steep. A Hard clear at 90 Event Tickets plus the +25 speed bonus lands at 115 Tickets, against 40 for a Normal clear — nearly triple before you count the extra 2 Kit Components. That gap compounds across a week: five focused Hard runs net 575 Tickets and 25 Components, while five casual Normal clears return 200 Tickets and 15 Components. If you only have twenty minutes a day, one Hard attempt that finishes inside the bonus window beats three Normal clears, because the speed bonus is a flat +25 regardless of tier — it's proportionally worth far more on a Normal run, but the Hard base payout still outpaces it.

The first clear of the day bonus is the most efficient thing to protect. It resets at daily rollover, so even a single slow Normal run per day keeps a steady cosmetic crate income without burning your evening. Treat the daily crate as a floor, not a goal: a 20-minute Normal clear that misses the +25 speed bonus still banks 40 Event Tickets and 3 Kit Components on top of the crate, so the only real loss is the bonus Tickets, not the cosmetic. If you're chasing a badge feat that needs a specific floor or kill condition, spend your first-clear run on that feat instead — the crate drops regardless of tier, so a Normal feat attempt costs you nothing in crate value versus a Hard speedrun.

Spending tickets wisely

The event shop rotates stock, and the expensive items are not always the best ones. Prioritize the kit component bundle first if you have not maxed the Survival Kit, because it accelerates every future run. Cosmetic outfits are the last purchase — they are permanent, so there is no rush while the event is live.

Community data suggests the shop restocks mid-event, so holding a few hundred tickets for the second rotation is a reasonable strategy. Buying everything on day one often leaves players short when a better item appears. In practice, this means resisting the urge to dump your entire ticket balance the moment the event shop opens — a player who spends 800 tickets on day-one cosmetics may find themselves 200 short when a discounted kit component bundle or a limited-time weapon skin surfaces in the mid-event refresh. Track your ticket income per run and set a reserve threshold (roughly 30–40% of your expected total) before committing to any first-rotation purchase.

Common mistakes that end runs early

Most failed runs die to the same handful of habits, and all of them are fixable. The pattern shows up repeatedly in player reports: people treat The Hollow like a combat mode and try to fight or outrun threats instead of avoiding them.

• Running everywhere. Sprinting drains stamina fast in the dark and generates noise. Walk the corridors, sprint only in open rooms.

• Ignoring the objective markers on Hard. They vanish after floor three, so players who never learned the layout get lost. Practice on Normal first.

• Hoarding items. Four slots is tight. Drop cosmetics immediately.

• Skipping the light switch. The floor one west cell door stays locked without it, and players waste minutes pulling a dead handle.

• Fighting the timer instead of the route. A clean route beats fast reflexes every time.

The early level walkthroughs are worth revisiting before your first Hard attempt, since the movement and interaction fundamentals carry over directly and the practice makes the hotel layout feel familiar faster. Treat those first three floors as a rehearsal for the two skills Hard actually tests: stamina pacing during long corridor walks and memorizing which doors need the light switch versus a key item. Running Normal repeatedly also teaches you the objective marker positions before they vanish after floor three, so you arrive on Hard already knowing the route instead of searching blind.

Managing the Nightmare Timer

The timer is the real antagonist. It starts at 25 minutes on Normal and 22 on Hard, and the Full Kit Bonus adds three minutes once you unlock it. Every floor has a soft time budget, and blowing past it compounds — a slow floor one almost always means a failed rooftop sprint.

Set mental checkpoints: lobby by minute 2, elevator running by minute 6, master key in hand by minute 11. If you are behind at any checkpoint, consider restarting rather than pushing a doomed run, since a fresh attempt costs nothing.

Frequently Asked Questions

How long does a PETAPETA The Hollow run take?

A first clear usually runs 20 to 25 minutes on Normal, while experienced players finish Hard in 12 to 14 minutes. The timer allows 25 minutes on Normal and 22 on Hard, with a three-minute extension once the Survival Kit is fully upgraded.

Do I need to finish the story to play The Hollow?

You only need the tutorial chapter completed to unlock the event tab, so a fresh save can jump straight into The Hollow within minutes of starting the game. The mode runs on a separate save state, meaning your Survival Kit components, ticket totals, and floor progress inside The Hollow never touch your main story file, and nothing you do there can lock or alter main progression. Because entry is free and unlimited, you can treat early attempts as pure reconnaissance: run Normal once just to learn the floor order, then immediately re-enter to practice the Emergency Keyring route without any penalty for a failed rooftop climb.

What is the fastest way to earn event tickets?

Fast Hard clears pay the most, at 90 tickets plus a 25-ticket speed bonus. Protecting your daily first-clear crate bonus is the most efficient habit if your playtime is limited, since it stacks on top of normal payouts.

Can I play The Hollow with a friend?

Yes, the event supports solo or duo play. In duo mode the key pickups split between players, which speeds up floors two and four considerably since both keyring holders can work separate lock routes at once, though both players must reach the rooftop to bank the full reward — a downed partner at the final climb still costs the team the complete payout.

Is the Survival Kit permanent?

The kit persists for the duration of the event and applies only inside The Hollow. Components carry between runs, so every clear makes the next one easier, and the track caps out after roughly twelve full clears on Normal difficulty.

The Hollow rewards patience and route memory far more than reaction speed, and that is the takeaway worth carrying into your next attempt. Learn the floor order, protect your daily crate, push components toward the Emergency Keyring, and the mode turns from a stressful scramble into a reliable ticket farm before the event window closes.