Made with Grok Imagine · CC0 · 11 Sept 2026

Sewer District Terrain Tilesheet 4x4

Generated from: Pixel art tileset sprite sheet for a 2D side-scrolling platformer, exactly 16 tiles arranged in a strict 4 by 4 grid (4 columns, 4 rows), equal square cells filling the whole image edge to edge, no extra margin, no gridlines, no labels, no separators. Flat front-on orthographic view, no perspective, no drop shadows, crisp chunky pixel clusters, dark outlines, readable when each cell is scaled down to 20x20 pixels. Melancholic urban-decay film-noir palette for a dark slimy sewer tunnel with rusted pipes: floor #232a22, wall #151a14, accent #3f5a3a. READ ROW-MAJOR FROM THE TOP-LEFT CELL, in this exact order: row 1: (0) floor_top - wet stone walkway slab with a lighter wet top edge; (1) floor_fill - repeating dark wet brick paving, uniform, fully tileable; (2) platform_top - mossy stone platform top with a green slime rim; (3) platform_fill - dark stone underside with grime streaks. row 2: (4) wall - grimy curved brick tunnel wall with algae and damp stains; (5) ceiling - dark brick arch ceiling panel; (6) ledge - slimy stone ledge with green slime drips; (7) crate - a soggy wooden crate with dark water stains. row 3: (8) pipe_h - rusted sewer pipe running horizontally with heavy joints; (9) pipe_v - rusted sewer pipe running vertically with a dripping valve; (10) sign - a dim green utility sign box made only of abstract glowing bars and rectangles; (11) vent - a rusted iron vent with thick bars. row 4: (12) sky - near-black backdrop with a faint sickly green glow; (13) silhouette_a - distant tunnel arch and pipe silhouettes, flat dark shapes; (14) silhouette_b - closer darker corridor openings and pipe silhouettes; (15) void - flat near-black fill. Seamless tiling: cells 0 through 6 are repeated across the level, so their edges must match up seamlessly with no unique shadow, gradient or vignette. Absolutely NO letters, numbers, words or readable text characters anywhere - evoke signage with abstract glowing shapes only. Keep all colors inside the listed dark green and rusted pipe family.