There were 21,400 reasons to walk away from Hollow Mine, according to a development retrospective shared on the roguelikes subreddit. What that number represents, exactly, remains the kind of cryptic detail that makes for compelling behind-the-scenes storytelling, but the figure shows just how much friction went into shipping Indieeverse’s action roguelite about mining, crafting, and relentless 2D combat.
Hollow Mine launched in October 2025, with procedurally generated mines spread across five biomes, 90+ distinct rooms, and a roster of 13 unlockable character classes, each with unique starting equipment and abilities. You’ll dig through fully destructible environments, dodge bullet-hell patterns with a snappy dash mechanic, and deploy bombs and mining carts as both tools and weapons. The game offers over 250 items to discover, 100+ weapons and spells, and more than 100 unique abilities that shape how you approach each run.
Boss encounters number 10, with a two-staged final confrontation waiting at the mines’ depths. Between runs, a persistent hideout and personal chest let you stash rare finds and manage your growing inventory across attempts, grounding progression in the kinds of systems roguelites have learned to use well.
You can play Hollow Mine on itch.io alongside Steam . Five more character classes are promised in future updates, suggesting the 21,400 reasons to quit may just have been a beginning.