FAQ
These are the questions asked most often in-game and in the Steam group. The answers are checked against the current configuration; tell us if something doesn't match.
How to join
Copy the connect address from the website into the console, or join from Steam groups, friends, or history. Matchmaking may not choose the same server, so the IP page is the most reliable.
Why Steam matchmaking cannot find the server
L4D2 lobby matching depends on region, latency, server tags, player count, and Steam state. If it fails, copy connect directly or use !ip after joining to move to an empty sibling server.
What is Tickrate
Tickrate is roughly how often the server processes game logic each second. It affects feel and synchronization, but higher is not magic; client FPS, network quality, and plugin load matter too.
What is nb_update_frequency
This setting relates to common infected update frequency. It can affect horde response and server load. If you are just playing, you usually do not need to change it.
What the Director system does
The Director controls horde, special infected, supplies, and event pacing. Anne modes add custom spawns, dynamic AI, and boss progress on top, so they feel tighter than vanilla.
How to make quick binds
Use bind in the console, for example bind F6 "say !vote" and bind F7 "say !join". If the key does nothing, confirm the console is enabled and your input method is not intercepting the key.
Where to find custom maps
Use !mapvote to see votable maps. The website and announcements also list common custom maps. Subscribe or install maps before joining them.
Custom map cannot load or stalls for a long time
This is usually caused by missing local files, version mismatch, VPK conflicts, or slow downloads. Quit, check subscriptions, clear conflicting maps if needed, then reconnect.
Custom map event or finale does not trigger
Some custom map scripts are sensitive to player count, positions, event order, or server plugins. Group up, follow map prompts, then switch maps or contact an admin if it still fails.
What to do with Too many indices
This usually relates to map entities, scripts, or plugin limits, and is common on complex custom maps. Change map or restart the round first. If it repeats on the same map, send the map and chapter to an admin.
What to do with Client timed out
Check your local network, Steam connection, and map download state. If it happens only on one server, use !ip to switch. If many players time out together, the server or map resources may be abnormal.
What to do with crashes or material issues
Disable conflicting mods, verify game files, and remove duplicate VPKs. Purple-black materials, model errors, or frequent custom-map crashes usually point to local resource conflicts.
Is Anne co-op's 16 seconds the gap between waves?
No. The 16 seconds restart after kill observation. The last SI spawn time cannot offset it. That is why two waves sometimes feel stacked.
Why doesn't the countdown move when I am out in front?
Progress uses the team's lower-median Flow, not the fastest runner. If the back half has not moved, the countdown still treats it as a stall.
Why do SI always pop out overhead or around a corner?
Spots within 250 units of any survivor are hard-excluded. Point-blank spawns do not exist. The "in your face" you see is usually it leaving a legal high spot or corner and closing immediately.
Does a high PPM lock you on Extreme forever?
Leaving the saferoom locks the round tier. Joins and leaves mid-round will not flip this round. The next round re-averages the new team's personal PPM. Thresholds recompute daily from server-wide samples.
Is Neri a tier above Extreme?
Auto PPM never picks tier 6. Neri only exists as a fixed mode: Extreme plus Anne-Neri. The spawn timeline stays Extreme.
Should a first visit play Campaign or Anne co-op?
Start with a regular or vanilla campaign to learn routes, revives, and following the team. Join standard AnneHappy after you can finish a game. Hardcore, Not0721 high pressure, and Versus are not first stops.
Can we start 4v4 without enough players?
No. Pick matching cfgs such as zm1v1, zm2v2, nextmod3v3. Head count changed, vote again.
What happens if you stand still while healthy?
Grouped and stalled, the countdown hitting the deadline starts an uncapped hold. The wave drops when you start walking. Stagger positions to top off, then move immediately.
If !xx and chat prompts disagree, which do I trust?
Trust the match the server actually loaded and the admin notice. Right after a vote, the page or chat prompt can lag a beat. Type !xx / !x again.
How vanilla campaign and Anne campaign differ
The Anne version keeps stats, some commands, and web hooks. The vanilla version turns off most gameplay plugins, feels closer to offline or official servers, and will not spawn on the Anne co-op timeline. To practice Anne co-op, pick AnneHappy, not vanilla campaign.
When should I check !tank?
Check Boss progress before finales, custom-map events, or narrow stairs. Anne modes can vote a change with !voteboss. Random changes can leave the back half empty or suddenly packed.
Why do we always wipe at the elevator?
A healthy clump standing still at the door hits an uncapped hold at the deadline. The doors open, you step, and the wave drops. Stagger while you wait, board together, and check both ends as you exit.
Is Hardcore just two extra SI?
No. Standard Anne co-op and Hardcore share the same 16-second countdown and Anti-Bait. What changes are forgiveness and limits. Supplies are tighter, and the same incap lets later waves crush the team more easily.
Should you clear a Witch immediately in Anne co-op?
Agree who clears and who watches around first. After a startle, a down or pin is vulnerable and dumps the wave immediately. Miaomei Realism Witch HP is 4000. Do not copy standard Anne co-op habits onto it.
What to do before leaving the saferoom
Split supplies, agree who leads and who covers rear, and check !tank on event chapters. The step out locks this round's tier. Waiting and swapping happens inside.
Is melee viable in Anne co-op
Yes. Solid at stairheads and narrow corridors. Carry less on open maps; a Charger plowing into the group is faster than a melee reaction. One or two per team is enough.
Bile or pipe bomb first
It depends on the situation, not an order. Bile is for pickups and breaking a surround, pipe bombs clear hordes. If movement and guns can handle it, spend neither.
Why is the Hard Rain return harder than the way out
Water slows you down, flooded detours stretch spread wider and wider, and progress reads lower-median Flow. Half the shortcuts from the way out are gone. On the return, tight spacing beats rushing.
How much flow does one wave cover
At a normal pace you cover 3% to 5% between waves, about 20 to 30 waves per chapter. The longer the map, the longer each percent takes. For a thirty-thousand-unit chapter like c14m1, stock for 30 waves and up.
How do the map articles work with the spawn visualizer
The link at the end of each chapter loads that map and places the whole team at the matching progress. To study another stretch, change the progress number and re-place, or just drag the survivors.