✓ Fits the action horror games cluster, with horror tension, horror setting and single-player focus
≠ Stands apart with deep simulation, vibe casual and resource management, while skipping adventure storytelling
Cookie Clicker is an idle clicker game with a baking theme. Bake cookies by clicking on a giant cookie. Use the collected cookies to buy upgrades. Which will get you even more cookies, and more, and more... you get the idea!
Where it drifts furthest from Slitterhead: tone and visuals.
It predates Slitterhead by 11 years, with what that implies technically.