bullet hell × diablo × terraria
Rough idea from the notebook:
top-down bullet hell, but not a spaceship — a dude with a gun walking
could be call of duty style, or a mage with spells
vertical (moving up) or horizontal (moving right)
diablo 1 meets terraria — town at the top, dungeons down a level at a time (see fallout shelter)
waypoints and portals, maybe scrolls that only go back so many levels
Bullet hell is usually a spaceship and a wall of projectiles. Strip that frame off, keep the dodge, and drop it into a world that looks more like Diablo and Terraria.
the concept
- character: on foot, not in a cockpit. a soldier with guns and grenades, or a mage with elemental spells.
- direction: pick one — vertical march through enemy territory, or horizontal side-scroll chaos.
- surface town: the hub. trade, missions, upgrades, NPCs.
- descending dungeons: dig down a level at a time. each floor harder than the last. fallout shelter's cross-section layout, so the player can see what's beneath them.
- waypoints and scrolls: unlock waypoints as you go. scrolls send you back a few levels, not all the way — you have to decide when to burn one.
- dynamic environments: lava floors, haunted crypts with phasing ghost bullets, collapsing ceilings. the room is also shooting at you.
features
- skill trees. soldier spec'd for rapid-fire or explosives; mage for elemental spells or summoning.
- multiplayer. one player draws fire while the other holds up a barrier.
- endless mode. no dungeon, no town — just escalating bullet patterns until you die.
- boss fights. end-of-floor encounters that combine bullet hell patterns with diablo-style attack rotations.
- mod support. let players ship their own dungeons, skins, bullet patterns. keeps it fresh past launch.
Twitch reflexes on the top layer, strategic progression underneath.