Unnamed Concept Game

This is a very WIP Metal Slug fan game currently in the early stages of development (mostly ideas at the moment...and searching for sprites and stuff XD). It probably won't have a whole lot of new features either, mostly just existing Metal Slug arcade-style mechanics. Yeah it's not that good.

Also please note that some of the things here are not official like the lore and vehicle specs.

## Characters and Factions

### The United Nations

The protagonist organization of the Metal Slug series. They are trying to maintain control and peace over the world and put down insurgencies such as the Rebellion, the Amadeus Syndicate, and the Ptolemaic Army. They also seek to protect the Earth from extraterrestrial threats.

The military arm of the UN is the **Regular Military**, the more militarized successor to the Peacekeeping force. The main branch, the **Regular Army**, was formed from the militaries of several nations in 2027 in response to the threat of the rebellion. Initially ill-equipped and unprepared, the actions of the **Peregrine Falcons Unit** helped buy them time to organize and regain control over some regions including most of North America, the U.K., parts of Continental Europe, Australia, and Southeast Asia.

The PF unit is a squad-sized special force which specializes in covert operations. Its members are extremely skilled and are capable of overcoming just about any threat when working together. It often works in conjunction with the SPARROWS unit and other special operatives to cause major disruptions within hostile operations.

The Regular Army's high command is located in the Cheyenne Mountain complex in Colorado (USA), where they oversee the global operations against the many factions that the regular army is fighting against.

### The Rebellion

A collection of rogue military units, militia, terrorists, and guerillas that was formed by Donald Morden, a former Regular Army officer who lost his family to a preventable terrorist attack. After this loss, he became disillusioned with the Regular Army and went crazy.

The rebels secretly developed advanced military technologies and took over parts of the world. Morden and other senior rebel officials promised a more efficient system than the UN and the preservation and reformation of world governments. Because of this, popular support for the Rebels remained strong and the Regular Army never truly defeated them.

Despite their promises to improve society in general, they have been known to torture prisoners, use forbidden weapons, and establish occupied surveillance states. Starting in 2041, the Rebels began forming new elite units and recruiting new commanders to try to gain the upper hand in the endless war, resulting in the deaths of many PF operatives.

### Main Characters

Private First Class Protagonist: The protagonist, a member of the PF special forces unit. He is also the only playable character besides...

## Plot

In the year 2048, the war between the Regular, Rebel, Extraterrestrial, and Ptolemaic forces has grinded to a stalemate. The Regular Army's Metal Device Project failed to make any significant change in the war effort. Meanwhile, the Rebels begin setting up hypersonic missile silos.

Marco hacks into a Rebel army database with missile targets, and he finds that many of the missiles are equipped with hydrogen warheads and that they are targeted at several Regular army bases and major cities. The most alarming discovery is that the Cheyenne Mountain complex will be targeted with an experimental antimatter missile only five days after the discovery.

The United Nations dispatches special operatives to multiple locations in an attempt to find the missiles. A PF soldier code-named "protagonist", is sent to abase in Rebel-occupied Saudi Arabia to find a suspected missile silo. However, this ends up being a trap and protagonist ends up having to destroy a machine within the base specifically meant to trap and kill intruders. Being the protagonist, protagonist destroys the machine. No hypersonic missiles were found.

A few hours later, a few conventional missiles launch ahead of schedule and devastate the unprepared city of Jacksonville, Florida. Regular Army forces scramble to repel the Rebels that assault the city after the strikes.

Protagonist is tasked with recovering some Regular army vehicles, which he does successfully. The Regular Army forces are forced back by the Rebel fleet, so Florida Man steps in and helps protagonist turn the tide. After destroying several ships, protagonist and Florida Man encounter a rebel aircraft carrier with nuclear missiles and assist Regular forces in capturing it and moving the warheads to a secure facility, where they are neutralized.

Despite this success, the Regular Army still had no data on where exactly the antimatter bomb was. However, one day Tarma was scouting a road near the Volga River somewhere in Russia and Tarma spotted a train on tracks alongside the river.

The train has several armored cars near the locomotive and numerous escorting vehicles. Suspecting that the train was carrying the antimatter warhead, the Regular Army immediately sends troops to intercept. Protagonist, Fio, and Tarma are dispatched in an attempt to delay the train while a group of Regular mechanized infantry try to delay Rebel reinforcements.

The three battle through Sergeant Allen 'O Neil and his Allen platoon, a BGFTS gunship, as well as numerous other Rebels who were guarding the...nonexistent antimatter warhead. The team has no choice but to sabotage the locomotive and abandon the train as the BGFTS strafes them. Somehow, Tarma manages to fall off his motorcycle and off a cliff, so protagonist and Fio jump down on parachutes.

Fio stays with Tarma while the protagonist receives word that the Regular forces had once again been led into a trap, so he goes to assist them. (There is an alternating path at this point. The player can go through a zombie-infested town or through a group of rebel air units and tanks on the cliffs.) Protagonist gets to a steppe to find that most of the Regular forces were defeated by Romy's ACE unit. However, the protagonist uses 80% of his power and destroys the Rebel forces (previously used only 79%).

The Rebel train is later recovered and it was confirmed that it was yet another diversion. Numerous hypersonic missiles are launched from hidden sites; cities and military bases under UN control are ravaged. The antimatter missile appears at first to be unstoppable and undetectable, the situation seems hopeless for the personnel stationed at Cheyenne complex since they are unable to evacuate all the staff and hardware in time.

However, with a day to spare, a UN-affiliated hacker discovers that the antimatter warhead was being launched via a massive aircraft known as the Hydra from the Caucasus mountain range. The intelligence division also finds that the elite Blizzard unit is guarding the Hydra's AO.

The exact location is soon pinpointed by Marco and the remaining Regular forces mobilize for the desperate attempt to protect the UN's military leadership. Protagonist and Florida Man gear up for a difficult final mission...

## Enemies

### Fortifications

Spike Bunker A small antitank cannon casemate with spikes on top. 35HP

MG nest A nest with an M60 machine gun in it. 25 HP

AA cannon A light antiaircraft cannon that fires in bursts. It can target land units as well due to its range. 23 HP

AA MG A mounted machinegun that can be used by infantry. 5HP

Sandbag A few bags with sand in them that are used as cover. 40 HP

Bush A bush with 6 HP. Bullets pass through.

### Bosses/Minibosses

Boss 1: Coast Facility HQ.

Miniboss 1: Destroyer

Boss 2: Aircraft Carrier

Miniboss 2: BGFTS

Boss 3: ACE Tank

Miniboss 3: Another BGFTS...

Miniboss 4 (avoidable): Hydra Engine Room

Boss 4: [REDACTED]

## Usable Vehicles

Normal SV-001 The OG Metal Slug 6 HP Main battle tank with omnidirectional Vulcan MGs (1 dmg) and a cannon (18 dmg).

SVH-03 Slug Copter/Chopper 6HP Attack helicopter with 360 degree rotating automatic cannons (2dmg) and bombs (18dmg). (won't use lol)

SVF-07V Type A Enhanced Slug Flyer 6HP VTOL jet fighter with forward facing high velocity Vulcan MGs (1dmg) and air to air missiles (20dmg).

Slug Gunner 8HP Heavy mechanical suit with the capability to transform between bipedal and tank mode. Equipped with a heavy machine gun (1dmg) on one arm and a pile bunker on the other (11dmg). Also has a heavy cannon (20dmg). (won't use lol)

Regular Torpedo Boat 6HP

SV-001 Bronze 8HP

## Weapons/Powerups

Pistol Default weapon with infinite ammunition. Very weak.

Knife Melee Weapon that deals 3 damage.

HMG Actually an assault rifle that's just like a pistol but it fires faster and can shoot diagonally. 180 ammunition.

Shotgun Shotgun which shoots very powerful pellets. The pellets demolish anything in their path but lose velocity quickly. Deals 16 damage per burst. 20 ammunition.

Flame Shot A flamethrower which shoots a flammable acidic solution. Deals 7 damage per projectile. 30 ammunition.

Rocket Launcher A launcher which launches fairly powerful rockets at enemies. Effective against vehicles. Deals 7 damage per hit. 30 ammunition.

Drop Shot Launches bouncing bombs which can kill enemies behind cover and do moderate damage to vehicles. Weak against aircraft. Deals 5 damage per hit. 30 ammunition.

Enemy Chaser Weak homing missiles that are effective at locking on targets but have a minimal AOE. Deals 4 damage per hit. 40 ammunition.

Super Grenade A high-velocity grenade that can pierce through soft targets. It lacks power against heavily armored vehicles and emplacements though. Deals 6 damage per hit. 20 ammunition.

2 MG Dual SMGs which pack devastating firepower but run out of ammunition quickly. 240 ammunition.

2 Magnums Dual pistols with magnum rounds that deal 2 damage per hit and fire in 2 shot bursts. 100 ammunition.

Normal Bomb Reverts back to normal anti-tank grenades (+10).

Fire Bomb Gives the player 10 Molotov Cocktails which deal only 5 damage per "explosion" but have a large AOE.

Grenade Box Gives player 10 of their current grenade/cannon/missile.

## Friendly NPCs

Civilians.

Old man POWs.

Soldier POWs.

Regular Army Rifleman.

Regular Army Shielded Soldier.

Regular Army Bazooka Soldier.

President.

Allied SV-001.

Regular Army Helicopter.

Hyakutaro.

Eri.

Marco.

Random old man on a trawler.

Rumi Aikawa.

## Soundtracks

Mission 1:

Metal Slug Theme (MS1 Mission 1 ST remake)

Steel Beasts (boss theme, might modify a bit)

Mission 2:

Blue Water Fang (will modify)

A soundtrack that I'll try to make. (bruh moment)

Steel Beasts

Mission 3:

Hard Water

Zombie Town OST (not made yet...)

MS3 Pyramid Theme (modified)

Steel Beasts

Mission 4:

In the Void modified

First Contact

Assault Theme (modified)

Speeder

Himitsu Factory Modified

Assault Theme (OST)