Imperial Fortress Bastion
Hold the line against the endless siege
Plunge your players straight into the meat grinder of 41st-millennium trench warfare. This 15-map pack delivers the ultimate grimdark siege experience, transitioning from muddy, razorwire-choked no-man's-lands to the claustrophobic underground vaults of an imperial stronghold. Your squad can intercept sappers in collapsing dirt tunnels, defend roaring macro-cannon emplacements, or make a desperate final stand inside the shield generator core. Designed for maximum tactical utility on your VTT, these maps offer brutal chokepoints, layered defenses, and interactive environments like burning promethium sludge and functioning cargo elevators. Whether your players are Astra Militarum guardsmen holding the line against a Tyranid swarm or Space Marines deep-striking into a rebel-held bastion, this pack provides a comprehensive battlefield sandbox.
Typical Game Uses
- • Planetary siege defense
- • Trench warfare and no-man's-land assaults
- • Sabotaging heavy artillery emplacements
- • Last-stand extraction missions
starsAmbient Variants — Soon available on Patreon!
📦 Download Full Pack (.ZIP HD)
Download all clean HD map variants in 1 click (watermark-free), including gridded and gridless versions for Foundry VTT, Roll20, and Fantasy Grounds.
Pack Content (15 Maps)
Grimdark Frontline: Trench Network & No-Man's-Land
A brutal, zig-zagging muddy trench network fortified with thick sandbags and barbed wire, facing a scorched no-man's-land.
Macro-Cannon Emplacement & Loading Crane
A colossal rotating artillery battery surrounded by hydraulic ammunition lifters and reinforced ferrocrete blast shields.
Scorched Mudfield: The Drop-Pod Assault
A grimdark, desolate wasteland scarred by the brutal reality of war, featuring smoking craters and the remnants of a heavy orbital assault.
Bastion Gatehouse & Killzone Courtyard
A heavily fortified gateway flanked by twin armored pillboxes, designed to funnel attackers into a deadly crossfire.
Aegis Defense Line & Mortar Pits
A heavily fortified secondary trench line featuring interlocking energy shields, dug-in heavy mortars, and vital communication relays. Perfect for desperate last stands or brutal artillery sieges.
Underground Munitorum Supply Depot
A highly reinforced subterranean vaulted bunker packed with towering stacks of explosive munitions, fuel barrels, and heavy loading equipment.
Fortress Command Bunker & Holo-Tactica Dais
A heavily fortified, subterranean war room where planetary campaigns are won or lost around a glowing hololith projector.
Field Hospital & Chiurgeon Ward
A dark and bloodstained triage bunker where wounded guardsmen await harsh mechanical surgeries and potent combat stimulants.
Hydra Flak Battery Roof
An elevated, heavily fortified fortress rooftop dominated by a massive quad-autocannon anti-aircraft emplacement tracking orbital targets.
The Breached Rampart: Rubble & Ruin
A heavily fortified curtain wall shattered by orbital bombardment, leaving a treacherous slope of rubble and twisted rebar into the fortress heart.
Valkyrie Landing Pad & Refueling Station
A reinforced octagonal landing deck jutting from a massive bastion wall, prepped for rapid gunship refueling and rearming.
Subterranean Sapper Tunnels & Counter-Mines
A claustrophobic network of hastily dug dirt tunnels, perfect for intercepting enemy sapper teams beneath the chaotic battlefield.
Ecclesiarchy Field Shrine & Reliquary
A fortified, grimdark chapel within fortress walls where doomed soldiers receive their final rites before charging into the relentless meat grinder.
Shield Generator Core Vault
A cavernous grimdark machine chamber housing massive void-shield generators that protect the bastion above. Navigate lethal plasma arcs and humming coolant channels in this high-stakes industrial vault.
The Final Redoubt: Throne of Defiance
An innermost fortified command sanctum where desperate leaders make their blood-soaked last stand behind heavy barricades and mounted weaponry.