At its core, Nine Trials follows the familiar formula popularized by Vampire Survivors : you face endless waves of monsters, leveling up and choosing upgrades to survive.

The permanent upgrade tree (Cultivation) provides a satisfying sense of growth even when you lose a specific run. The Downsides

The game can feel punishingly hard early on. Without specific "hacks" or optimal builds, you might hit a wall around the mid-game trials.