This is a roguelike × classic snake mashup, where your serpent can only turn at 90-degree angles as it slithers through procedurally generated dungeons. Grow by eating rats. Descend by killing baddies and going downstairs. Made for the 7DRL Challenge 2026.

ProTip: The game defaults to FAST-PACED mode. You can enable TURN-BASED mode by entering the Konami code on the title screen.

↑ ↑ ↓ ↓ ← → ← → B A (read more about the Konami code)

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Deep beneath the surface lies a dark dungeon full of rats, monsters, and forgotten treasure. A small hungry snake begins its journey there, slithering through tight stone halls and hunting rats to survive. Each rat it eats makes it grow longer and stronger, letting it face bigger enemies that guard the deeper rooms. The farther the snake travels, the more dangerous the dungeon becomes, with strange creatures and powerful bosses waiting below. What starts as a simple hunt for food slowly turns into a descent through the entire dungeon as the growing serpent fights, coils, and devours its way toward the darkest depths.

Features

• Procedural dungeons BSP-generated maps that grow larger each level
• Fog of war raycasting FOV reveals the dungeon as you explore
• Enemy AI baddies patrol corridors; a 2×2 boss hunts you every 5th level
• Power-ups speed, shield, and phase pickups to turn the tide
• Hazards lava tiles and spike traps lurk in the darkness
• Projectiles fire your own tail segments to pierce enemies from range
• Progression clear all enemies to unlock the staircase to the next level
• Retro audio synthesized sound effects via the Web Audio API

How to Play

Key	Action
Arrow keys / WASD	Change direction
Space	Fire projectile (costs 2 tail segments; need length ≥ 3)
Any key	Start / Restart after Game Over

Move through the dungeon, eat rats to grow, and kill every baddie (and the boss, on boss levels) to reveal the staircase to the next floor. Your snake's length is your health, each hit costs you a segment. If you're down to a single segment and take damage, it's game over.

Combat Tips

• Body kills baddies that walk into your body die instantly. Lure them in!
• Projectiles press Space to fire a piercing shot from your head. It costs 2 tail segments but destroys every baddie in its path and chips 1 HP off the boss.
• Shield pick up the + power-up to absorb one free hit.
• Phase the ~ power-up lets you pass through walls for 3 seconds. Great for escapes.
• Speed the * power-up doubles your movement speed for 5 seconds.

Bestiary

Enemies

Symbol	Name	Color	HP	Behavior
B	Baddie	🔴	1	Patrols corridors, reverses on walls, shifts sideways. Contact with your head costs 1 segment.
D	Boss	🟠	3	2×2 tile dragon that chases your head. Appears every 5th level. Flashes white when hit.

• Baddies spawn at a rate of 4 + level per floor (halved on boss levels).
• Bosses appear on levels 5, 10, 15, … and must be defeated alongside all baddies before the staircase opens.

Collectibles

Symbol	Name	Color	Effect
r	Rat	🟡	Eat to grow by 1 segment. Rats spawn at a rate of 4 + level per floor.

Power-ups

Three power-ups spawn on every floor:

Symbol	Name	Color	Duration	Effect
*	Speed	🔵	5 s	Doubles movement speed.
+	Shield	🔵	30 s	Absorbs the next hit from any source.
~	Phase	🟣	3 s	Pass through walls, teleports to the next open floor tile in your direction.

Active power-ups and their remaining time are shown in the HUD.

Hazards

Symbol	Name	Color	Effect
~	Lava	🟠	Instant death on contact.
^	Trap	🟣	Removes 1 segment on contact, then disappears. Fatal if you only have 1 segment.

1–3 of each hazard type are scattered across every floor.

Dungeon Features

Symbol	Name	Color	Details
>	Staircase	🔵	Appears in the room farthest from you once all enemies are defeated. Step on it to descend.
#	Wall	Grey	Impassable (unless you have the Phase power-up).
.	Floor	Dark grey	Safe to traverse.

Scoring

Your score is calculated using an additive formula:

Score = (Level × 100) + (Baddies Killed × 15) + (Max Snake Length × 5)

Action	Points
Reach a new dungeon level	+100 per level
Kill a baddie	+15 per kill
Kill a boss	+100 bonus
Grow your snake	+5 per unit of max length

Every action matters: kill baddies, eat rats to grow, and push deeper into the dungeon. There's an online leaderboard to share your glory!