The Rulebook:

Can I choose 3 grave hindering terrain markers for my starting force?

Thanks.

Are there printed Grave Hindering Terrain Markers? If so, in which release did they appear?

Comprehensive Rulebook:

17.2 Terrain Markers as Part of Your Force
Your starting force may include up to 3 Terrain Markers (even if they don’t meet the
requirements of 2.4d). They can be any mix of standard or nonstandard Terrain Markers. Terrain Markers you include in your starting force or bring in from outside the game are considered friendly to your force.
17.2a Standard vs Nonstandard Terrain Markers
Standard terrain markers are any 1x1 square marker of Blocking, Water, Hindering,
Smoke, or Object terrain with the default terrain values (see 17.11c). Elevated terrain
markers, terrain markers that are larger than 1x1 square, or terrain markers with values
other than the default terrain marker values are nonstandard terrain markers

Which section are you citing?

-J

A local venue is saying the The Werewolf By Night Play at Home kit came with 6.

You can see it on this video at around 1:15

https://www.youtube.com/watch?v=0WndxLd6hqY

They don't say "Grave Marker" and just have a picture on it - which feels sketchy to me.

17.2 - since it does say a player can mix standard and non-standard terrain, obviously players aren't limited to only starting with standard terrain.

I can comfortably make the argument to a local venue that the effects of the special terrain (Grave markers or things like Captain Cold's Ice Blocking) can't happen without the character being on the team to make that happen - but I'm not sure how to explain how Grave Hindering Terrain Markers can't be on a starting force - unless I'm wrong and you really can choose ANY terrain you want and once the Black Lantern (In this example) hits the map the grave markers all are available for use.

Thanks T! I will have to grab that PAHK.

There are no "grave terrain markers". The ones that come in the play at home kit are simply hindering terrain markers with a picture of a grave on it. That would be like saying the 1x1 elevated terrain is a "ladder terrain marker". The only thing that makes something a grave terrain marker is a characters effect not what the picture on the terrain is.

Yep, what JDub said.

IMO, These markers are clearly to be used WHEN a character CREATES a Grave terrain marker so we're not using "specials", other terrain or freaking quarters to designate them from other hindering terrain in my opinion. They arent actual Graves yet....

Thanks, JDub! Rep to you.