Insurmountable is a strategic adventure game with roguelike elements, challenging you to conquer a perilous randomly generated mountain. As a solitary mountaineer, traverse through Ice, Snow, and Stone terrains, utilizing items to maintain your diminishing stats while ascending and descending the insurmountable heights. The game features a dynamic weather system, day-night cycles, and various events to present formidable challenges throughout your journey.

Earn experience points from events to enhance your character by selecting skills that align with your preferred playstyle. With permadeath as a key roguelike element, you must experiment with different strategies to reach the mountain's summit. Insurmountable immerses players in decision-making within a hazardous and unpredictable environment, evoking intense emotions characteristic of such harsh conditions.