In the Swamp, lives Lila, an intelligent girl who loves cooking. The place was frightened by Yeti, who wanted to put away the tourists. In Howling Peaks, a snowing alpine village, lives Daphne's cousin Anna Blake (another who appeared in First Frights), the snowboarder Moose, Dustin Planks (nicknamed 'Cranky'), the tracker Barry 'Baz' Buckley, and Sergio (he's not seen, only heard). El Muncho was frightened by the El Scaryachi, who wanted to keep Costington away from the town. There also lives Costington, one of the characters that appeared in First Frights, the twins Emilio and Esteban, and the secret spy Romero. El Muncho is a Southwestern ghost town and is ruled by the unnamed Sheriff.

The player can also play with a friend in multiplayer co-operation.Д«esides the swamp, El Muncho and Howling Peaks can also be accessed. The player can get trophies for doing certain tasks. By defeating enemies, small masks are collected upon reaching a specified number of masks, the information about the equivalent enemy are shown in the Clubhouse. Collectibles, options, cheat codes, rewards and more can be accessed on the Swamp's Clubhouse. The collectibles are: ingredients for a hoagie the letters of the word 'Scooby' Scooby-Doo's collar medallion blue ghosts photographs and costumes. The game contains many collectibles that are distributed in specific secret locations in the three different locations. The characters' health bar goes down when a villain or enemy punches them, and it can only be restored by time or by defeating the enemies. The whole plot of the game and the stories are original. The game's combat system allows the character to run, jump, and perform attacks to fend off enemies that are encountered. The games has light puzzle elements that allow the player reach higher platforms and objects. Each character of the gang has different skills and functions. The primary goal of the game is to solve mysteries and find ingredients to Lila's stew. The player controls the five members of the Mystery Inc.

Spooky Swamp is primarily a third-person game with action elements. Shaggy and Scooby set off with the gang to solve two mysteries while secretly collecting the ingredients There they meet swamp resident Lila who asks them to recover ingredients to finish her stew. Shaggy and Scooby-Doo, as hungry as ever, venture into the swamp following a scent.

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