From Press Release:
DDoD is now running a special Halloween playtest, available through November 3 as part of Steam’s Scream 4 Fest. This update ads limited-time Halloween content such as spooky new decorations and anomalous pumpkins spread across the zone.
DDoD is a 1-4 player co-op roguelite shooter set in an industrial zone overrun by a sentient biological anomaly. Think The Ascent meets STALKER, with a touch of Escape From Tarkov.
The previous playtest attracted over 10,000 players. Since then, the team has made major improvements to controls, visuals, and performance, and added new localizations.