Apparently a cult classic of some sort due to its inventive use of horror FX, the effects are nice (even great) – but pretty much all of what Spookies has to offer.
More precisely, it’s the better than expected effects that make the other, below the average aspects of the movie look quite bad in comparison: the werewolf like creature roaming the forest for example, laughable. The 300-year old owner of the house, plain bad. There are a group of quests constantly branching off to different sections of the mansion to make themselves easier targets for the evil, quite uninspired.
On the other hand the birthday party, farting mud monsters and the possessed lady: all pretty cool, with the rest of the segments falling somewhere in between.
Spookies is more of a theme park right than an actual movie, which makes recommending it without urging to jump to the juicy bits – and skipping the boring – quite hard.