BOOMSDAY: cute world, horrible things. Co-op horde-survival shooter.

Meet the cast. You'll be killing all of them.

Fifty-four of them and counting, and every last one is convinced the field belongs to it. Here are six, so you know what's coming:

GRANDPA

Threat: extreme

Wheelchair. Shotgun. No brakes. Winds up from across the field, hits ramming speed, and detonates on arrival. Retirement did not mellow him.

THE COW

Threat: imminent

Strapped with eleven sticks of dynamite and completely calm about it. Doesn't run. Doesn't dodge. Just keeps walking at you until one of you stops existing.

TEDDY

Threat: sustained

Carrying a minigun that weighs more than he does. Somehow accurate. Would still like a hug afterward. There will not be an afterward.

MONKEY

Threat: escalating

Somebody left a crate of TNT unattended. That was a mistake. Now it rains lit explosives from wherever he's standing, which is never where you're aiming.

TIGER

Threat: unpredictable

Grenades, cooked way too long, thrown way too close. He knows exactly what he's doing. That's the upsetting part.

REX

Threat: airborne

Tiny arms. Full-size rocket launcher. Physically cannot aim down, so every rocket comes in at head height. Yours, specifically.

…and 48 more. The spitters spit, the chargers charge, the bombers sprint at you with the fuse already lit, the big ones split into small ones, and the small ones come in packs. Every 10 waves a boss shows up with a mechanic you will learn to hate personally. One of them eats your bullets and grows.

Nine ways to ruin a nice afternoon

Four modes are complete. Three more are under active construction, and two are still on the drawing board. Here is the honest state of the damage.

Classic

Endless survival across a seeded three-level industrial arena. Fight through lower, main and upper districts, or switch on Flatland for the original single-level brawl.

Co-opCompleteEndless

Chaos

The bounded survival fight cranked past sensible: enemies are tougher, faster and hit harder, but the XP pours out fast enough to build something unreasonable.

Co-opCompleteSpicy

Dungeon Sweep

Break open a buried grid, read the clues, survive enemy stairwells, collect three sigils, and sweep the boss room before taking the exit.

Co-opCompleteObjective

Death Match

Race your so-called friends to the frag limit before time runs out. Weapons and power-ups keep spawning; every death is a lesson and every respawn is revenge.

PvPCompleteRude

IN PROGRESS

Defend the Shrine

Hold a fragile shrine at the centre of a dark procedural forest while the horde pours through four lanes. If the shrine falls, the run ends.

Co-opObjective

HALFWAY

RPG

Descend cellar stairs into a procedural dungeon of rooms, corridors, doors and darkness. Clear floors, take exits, and face a boss every third descent.

Co-opDungeon crawl

ALMOST DONE

Two of a Kind

Use the Grav to haul exact rune twins to the central shrine. Every matched pair buys time before the breach floods the arena with another horde.

Co-opPuzzle combat

NOT STARTED

Escort

Move a vulnerable payload to its destination while the horde tries to tear it, and everybody standing near it, completely apart.

Co-opPlanned

PLANNED

Caveman

A melee-only run: no firearms, just rocks, clubs, improvised blunt force and the deeply reassuring power of raw instinct.

PlannedMelee

PISTOL·SHOTGUN·SMG·BURST RIFLE·MINIGUN·RAILGUN·CROSSBOW·NEEDLER·LASER·FLAMETHROWER·CRYO CANNON·PLAGUE GUN·ROCKET·GRENADE LAUNCHER·FLAK CANNON·PLASMA CANNON·CHARGE CANNON·BANC·GRAV·SWARM·HELLCOIL· PISTOL·SHOTGUN·SMG·BURST RIFLE·MINIGUN·RAILGUN·CROSSBOW·NEEDLER·LASER·FLAMETHROWER·CRYO CANNON·PLAGUE GUN·ROCKET·GRENADE LAUNCHER·FLAK CANNON·PLASMA CANNON·CHARGE CANNON·BANC·GRAV·SWARM·HELLCOIL·

WARDEN·BREAKER·PYROMANCER·GORGE·SUMMONER·OVERMIND·COLLAPSAR·DUELIST·DEVOURER·WARLORD·OVERLORD·LEVIATHAN· WARDEN·BREAKER·PYROMANCER·GORGE·SUMMONER·OVERMIND·COLLAPSAR·DUELIST·DEVOURER·WARLORD·OVERLORD·LEVIATHAN·

Top marquee: all 21 player weapons. Enemies drop most of them when they die; the stranger ones make you earn an introduction. Carry three, swap on the fly, then stack 64 perks on top: orbital blades, attack drones, ricochets, singularities and worse ideas.
Red marquee: all 12 bosses. One arrives every 10 waves in Classic. Each has its own mechanic. None of them are your friend.

Okay, about the blood thing

The characters are round. The animals are lovely. The dismemberment is extremely real. This is the whole bit, live from the field:

Carnage Facts

Serving size: 1 run · Servings per session: "one more"

Blood100%

Gore100%

DismembermentYes

Adorable victims54 kinds

Friendly fireoptional*

Remorse0%

*Hardcore modifier. See House Rules. Contains frequent blood, gore and dismemberment performed on very friendly shapes. Despite every visual signal to the contrary, genuinely not for children.

CURRENT BUILD Current Boomsday interface during a rain-soaked wave with the health, combo, wave, weapon and ammunition HUD visible

CLASSIC · wave 9. the new HUD is holding up better than the floor.

CURRENT BUILD Current Boomsday interface in a walled combat district with the complete HUD visible

WALLED DISTRICT · wave 6. still technically architecture.

Bring friends. Ruin friendships.

Up to 8 players, three ways to connect. Desktop and Steam Deck work today; the phone builds are in active cross-play testing.

Couch Co-op

Two players, one screen. Player 2 grabs a controller and drops straight in. The screen leashes you together, like it or not.

LAN Party

Host on your network, friends join by IP. No accounts, no services. Your router is the server, like the good old days.

Online Squads

Steam invites: create a squad, invite friends, ready up, go. Host-authoritative: one match, everyone in it.

8one match

Windows Mac Android iPhone Linux Steam Deck

Windows, Mac, Linux and Steam Deck are playable now. Android and iPhone cross-play builds are being tested before their store release.
Full controller support on every platform: pads on PC and Mac, pads on your phone, remap everything.
Friend went down? Stand over them to revive. Or don't. They can watch the rest of the wave from the floor.
Level-up slow-mo is shared. When one of you gets a perk, everybody savours it.

House rules (the host decides)

Real match modifiers from the real lobby. Every run is seeded & randomized. Share a seed to replay a world. Drag the dials and watch the forecast.

Mob Spawning 100%

Weapon Drops 100%

EXP Drops 100%

Power Up Drops 100%

Carnage Forecast

1,200corpses / min

1,440 Lblood / min

1:30first grandpa impact

12overpowered by wave

6 of 8projected survivors

Outlooksurvivable. barely.

Field notegrandpa is inbound. he is not going to brake.

Hardcore turns friendly fire on. We are not responsible for what your best friend does with a flak cannon.

The to-do list

Early Access means we're not done. It does not mean the game is empty. See all of the above.

BOOMSDAY · do next:

✓Ship Steam Early Access done
✓11 languages, day one done
✓Windows, Mac, Linux & Steam Deck playable
✓Finish Death Match done
Android & iPhone device testing testing now
Finish Two of a Kind almost done
Finish Defend the Shrine in progress
Complete the RPG dungeon crawl halfway
Build Escort not started
Google Play & App Store release after testing
More bosses, guns, perks, victims always