A list of the short horror films free-to-stream via Alter. Only short films, so no Web or Digital series, music videos, or compilation anthologies. Newest additions listed first, direct link in the Notes (ongoing).

"The most provocative minds in horror bring you three new short films every week exploring the human condition through warped and uncanny perspectives.

"Be ready to leave the world you know behind and subscribe. Once you watch, you are forever ALTERed."

Absent from the database:
Dead Quiet.

Note:
Alter has taken to reuploading older shorts and removing their earlier upload—this List retains the original order.