[plantwallshoe]

The threequel zombie movie lacked too much subtlety for you?

[senectus1]

Quadquel?

There is another (and supposedly final) in January 2026.

[IAmBroom]

It's actually a sort of standing joke that trilogies are sometimes 4-fold. Trivial Pursuit used that answer as one of their copyright test questions (if your game replicates our bad answer, you stole our product).