《越南大戰》（Metal Slug: Super Vehicle-001 ）是Nazca製作，SNK於1996年發行的經典橫向捲軸射擊遊戲，最初在街機及Neo Geo主機上發行，後來被移植到多個平台，包括PlayStation、Xbox、Switch和PC等。以其快節奏的動作、獨特的美術風格、幽默感以及高難度而受到玩家廣泛喜愛，並成為SNK最具代表性的遊戲之一。

故事背景設定在2028年，由前正規軍唐納德．莫丁將軍（General Morden）領導的反叛軍隊，之前曾發動對美國總統的刺殺行動，最終以失敗收場，事隔一年後再次企圖發動政變並掌控世界。正規軍為此開發出代號「Super Vehicle-001」的新型坦克「Metal Slug」，但測試中的樣車卻因情資外洩導致叛軍奪得。政府派出精英軍事組織「游隼」（Peregrine Falcon Strike Force），主要成員是馬爾可（Marco Rossi）和塔馬（Tarma Roving）。為對抗叛軍，小隊的任務就此展開冒險。

動畫和角色設計傳達了濃厚的戰爭氣氛，並融入大量幽默元素，增添整體的趣味性。玩家將一路穿越敵人的基地、叢林和城市，摧毀敵方的武裝力量並解救被俘的盟友。隨著故事進展，還會遇到一些科幻元素，比如強大的外星生物和高科技機器人，這些增添遊戲的變化與挑戰。操作方式非常直接，採用經典的橫向捲軸設計。主要使用手中的槍械、手榴彈和其他武器來消滅敵人。可以移動、跳躍、射擊和投擲手榴彈，並獲得不同的武器升級，例如機槍、火箭筒和火焰噴射器，這些武器讓戰鬥變得更加刺激。

遊戲的特色是「Metal Slug」坦克，具備高火力的迷你坦克，可以駕駛它進行戰鬥，使用強大的火炮和機關槍來對抗大量敵軍和強大的BOSS。坦克不僅增加攻擊力，還提供額外的防禦力。除了普通的射擊攻擊，還可以投擲手榴彈，對付強大的敵人或攻擊遠距離的目標。還設計許多需要精準跳躍和快速反應的場景，增加挑戰性。

共有六個主要關卡，每個關卡都具有獨特的場景和敵人設計。從叢林、沙漠、城市到敵方的秘密基地等多種環境。每個關卡的設計都充滿動作和挑戰，隨著關卡的推進，敵人的數量和強度逐漸增加，需要快速反應和熟練的操作來應對。每個關卡的結尾都有一個強大的BOSS戰，這些BOSS通常是巨大的機械裝置、坦克或飛行器，擁有強大的火力和多階段的攻擊模式。需要掌握BOSS的攻擊模式，並在有限的時間內將其擊敗，這些BOSS戰也成為《越南大戰》系列中最具代表性的元素之一。

任務 1：高津770式轟炸機殘骸要塞 – 鐵雪 / Tetsuyuki

在一片廢墟中，敵方建立一座由高津770式轟炸機殘骸改造的要塞，命名為「哲雪」（Tetsuyuki）。這座要塞擁有強大的火力防禦系統，四周佈滿雷達干擾設備，幾乎難以突破。然而，深入敵後，摧毀這座象徵著他們機械力量的要塞將是打破敵軍防線的關鍵。

必須突破敵方的防線，進入這座高科技要塞，找到其能源核心並將其摧毀。注意，要塞內部可能藏有精密的自動防禦系統和無人機巡邏隊，極大地增加了難度。除了轟炸機殘骸所構築的防禦外，還需面對敵方的精銳步兵部隊。他們會拼死捍衛這座象徵他們科技實力的據點。

任務 2：開發中的大型機甲Hairbuster Riberts

敵方科學家正在開發一種強大的大型機甲，名為Hairbuster Riberts。這是一個半完成的巨型武器，但其未完成的狀態並未降低其威脅。擁有致命的激光武器和無人控制的自動防禦系統，一旦它完全運行，將會造成毀滅性的破壞。任務是阻止Hairbuster Riberts 的完全啟動，將突襲敵軍的秘密工廠，摧毀這台機甲，防止它成為敵方戰爭機器中的殺戮巨獸。工廠內部遍布安保裝置，包括密集的防禦炮台與自動巡邏系統。要在它們發現你之前，將 Hairbuster 徹底摧毀。

任務 3：超弩級自走砲 -谷王 / Tani Oh

谷王（Tani Oh）是敵軍部署的超弩級自走砲，擁有驚人的射程和破壞力，可以輕易摧毀整個戰區。這台自走砲的精準打擊能力讓前線的友軍陷入極大的困境，如果不將其解除，敵軍將掌握戰場主導權。

任務是深入敵軍後方，找到谷王的運行基地，並設法在它發射致命炮彈之前摧毀它。自走砲四周佈有多重防護，包括厚重的裝甲和隱形護盾。此外，谷王有強大的護衛部隊，它們會全力保護這台巨大的戰爭機器。必須在其重火力下快速行動，才能成功完成任務。

任務 4：共同作戰用戰車- Shoe & Karn

Shoe和Karn是敵方部署的兩輛共同作戰的戰車，它們密切協同，形成無懈可擊的防線。在下方移動的Shoe戰車擅長重型火力轟炸，直接迎面而來，而在上面道路移動的Karn戰車則負責提供精準支援與防禦。它們的配合無比默契，讓許多試圖突破的部隊全軍覆沒。

必須找到這兩輛戰車，並逐一將其摧毀。運用戰術智慧，破壞它們的配合，才能成功突破這對死亡搭檔的防禦。Shoe和Karn會根據戰場情況進行戰術變換，必須靈活應對，利用它們的間隙進行致命打擊。兩輛戰車都配有自動修復系統，這意味著要迅速而果斷地結束戰鬥。

任務 5：萬能射程戰鬥車 - Iron Nokana

Iron Nokana是敵軍的一輛全能型戰鬥車，擁有強大的火力和驚人的射程，可以精準打擊遠距離目標。同時，它具備極強的防禦能力，甚至能夠反彈部分攻擊，是敵軍前線最強的支援力量之一。

任務是摧毀這輛戰鬥車，消除它對友軍的威脅。這將需要你找到它的弱點，並在它最薄弱的時刻進行攻擊。Iron Nokana具備快速機動能力，並會使用煙霧彈來混淆視線。你必須小心翼翼，避開它的射擊範圍，並找到機會給予致命一擊。

最終任務：擊敗出現戰鬥直昇機-Hi-Do

最後的決戰來臨，敵方再次派出的戰鬥直昇機Hi-Do。其裝備極為先進的武器系統，可以發射導彈和機槍掃射，並且能夠靈活迴避攻擊。Hi-Do是敵方領袖莫登（Morden）的移動工具跟最後王牌，他相信這台直昇機能夠徹底擊敗政府軍。

任務是擊敗Hi-Do，並追擊莫登（Morden），終結這場戰爭。如果能成功擊倒莫登，將會獲得額外的榮譽與獎勵。Hi-Do是敵方最強的戰鬥直昇機，擁有卓越的機動性和火力，需要準確的判斷和快速反應才能將其擊落。將其擊敗後，莫登將親自出現，需要面對他最終的絕地反擊。該直升機在越南大戰3(Metal Slug 3)再次以小頭目當場。

遊戲中還有大量的「囚犯救援」機制，在關卡中解救被俘的士兵，他們會提供武器升級或額外的分數，這增加挑戰性和重玩價值。出現”IN”的字樣就能進入操作該裝備。

《越南大戰》自推出後便受到廣泛的好評，被稱為是SNK最成功的遊戲之一。評論家們讚揚畫面的手繪像素美術風格，這種細緻入微的畫面設計展現戰場上的每一個細節，從士兵的表情到爆炸效果都充滿動畫般的質感。有時間跟彈藥限制，快節奏動作和高難度也成為玩家們津津樂道的話題。儘管操作相對簡單，但關卡設計和敵人的多樣性使得遊戲充滿挑戰，尤其是BOSS戰的設計，既具創意又具有高度的挑戰性。此外，幽默風格也深受玩家喜愛，無論是角色的動作表現，還是敵人和環境的設計，都充滿滑稽的細節，即使在緊張的戰鬥中也能讓玩家感受到輕鬆愉快的氛圍。

唯一的批評點在於遊戲的高難度，尤其是在後期關卡，對於新手玩家來說可能有些過於苛刻。然而，這也成為該系列的標誌，吸引大量喜愛挑戰的玩家。總體來說，這是經典的橫向捲軸射擊遊戲，無論是畫面、操作還是遊戲性都堪稱傑作。它不僅成為SNK歷史上的代表作，也在全球遊戲市場中占有一席之地，影響後續眾多射擊遊戲的設計理念。

Metal Slug: Super Vehicle-001, commonly known as "Metal Slug," is a classic side-scrolling shooter developed by Nazca and published by SNK in 1996. Initially released for arcades and the Neo Geo console, the game has since been ported to multiple platforms, including PlayStation, Xbox, Switch, and PC. Known for its fast-paced action, distinctive art style, humor, and challenging gameplay, it quickly became one of SNK's most iconic titles.

Story Overview:

Set in the year 2028, the game follows the rebellion led by General Donald Morden, a former officer of the Regular Army who had previously attempted to assassinate the U.S. President, only to fail. One year after this failed operation, Morden resurfaces, attempting another coup with the goal of taking over the world. In response, the government develops a new type of tank, codenamed Super Vehicle-001 or Metal Slug, to combat the rising threat. However, due to a security breach, the rebels seize control of the prototype. The government then deploys the elite military group known as the Peregrine Falcon Strike Force, whose main members, Marco Rossi and Tarma Roving, are tasked with reclaiming the tank and stopping Morden’s forces. Thus, their adventure begins.

The game’s animation and character design convey a strong war atmosphere while incorporating a hefty dose of humor, enhancing its overall appeal. Players will traverse various enemy bases, jungles, and cities, destroying enemy forces and rescuing captured allies. As the story progresses, science fiction elements, such as powerful alien creatures and advanced robots, are introduced, adding variety and challenges to the gameplay.

Gameplay Mechanics:

"Metal Slug" uses a straightforward side-scrolling design. Players primarily use guns, grenades, and other weapons to eliminate enemies. The controls allow for movement, jumping, shooting, and throwing grenades, with opportunities to upgrade weapons along the way, such as obtaining machine guns, rocket launchers, and flamethrowers, which heighten the excitement of combat.

One of the game's standout features is the Metal Slug tank itself. This mini-tank boasts formidable firepower, allowing players to operate its powerful cannon and machine gun to take on hordes of enemies and massive bosses. The tank not only increases offensive capabilities but also provides added defense.

In addition to regular shooting, players can throw grenades to deal with powerful enemies or hit distant targets. Many of the stages are designed to require precise jumps and quick reflexes, making for a challenging experience.

The game consists of six main levels, each featuring distinct environments and enemy designs. From jungles and deserts to urban landscapes and secret enemy bases, every stage is packed with action and obstacles. As players advance, the number and strength of enemies gradually increase, demanding quick reactions and skillful play.

At the end of each level, a boss battle awaits. These bosses are often enormous mechanical constructs, tanks, or aircraft with devastating firepower and multi-phase attack patterns. Players must learn the bosses' attack sequences and defeat them within a limited time, making these encounters some of the most memorable and challenging moments in the Metal Slug series.

Mission Highlights:

Mission 1: Tetsuyuki - The Fortress Built from Takatsu 770 Bomber Wreckage In a desolate wasteland, the enemy has constructed a fortress out of the wreckage of the Takatsu 770 bomber, named Tetsuyuki. Armed with powerful defense systems and surrounded by radar interference, this fortress is nearly impenetrable. However, penetrating the enemy lines and destroying this symbol of their mechanical might is key to breaking the enemy's defenses.

Mission 2: Hairbuster Riberts - The Giant Mech in Development Enemy scientists are developing a colossal mech named Hairbuster Riberts, which, though incomplete, is still a formidable threat. Equipped with deadly laser weapons and automated defense systems, the mech is on the verge of being fully operational, which would spell disaster. Your mission is to infiltrate the enemy's secret factory and destroy Hairbuster Riberts before it becomes an unstoppable killing machine.

Mission 3: Tani Oh - The Super-Heavy Mobile Cannon Tani Oh is a super-heavy mobile cannon deployed by the enemy, capable of striking targets from an immense distance and obliterating entire battlefields. Its precision targeting puts the frontlines at risk, and if not neutralized, it could shift the tide of the war in the enemy’s favor. Your mission is to locate and destroy Tani Oh before it can unleash its devastating firepower.

Mission 4: Shoe & Karn - The Joint Combat Tanks The enemy has deployed two tanks, Shoe and Karn, which work together to form an unbreakable defense. Shoe specializes in heavy bombardment while Karn provides precision support and defense. To overcome this deadly duo, you must destroy both tanks, dismantling their well-coordinated teamwork and strategic positioning.

Mission 5: Iron Nokana - The Versatile Long-Range Combat Vehicle Iron Nokana is a multi-purpose combat vehicle equipped with powerful long-range weaponry and exceptional defensive capabilities, even able to reflect some attacks. This vehicle serves as one of the strongest support units on the enemy frontlines. To eliminate its threat, you must exploit its weaknesses and strike during moments of vulnerability.

Final Mission: Hi-Do - The Reappearing Attack Helicopter In the ultimate showdown, the enemy has once again deployed the Hi-Do, an advanced attack helicopter equipped with cutting-edge weapon systems capable of firing missiles and machine guns while evading attacks. Hi-Do is the final tool of General Morden, who believes this helicopter will secure his victory. Defeating Hi-Do and pursuing Morden will bring an end to the war and earn you additional rewards and honors.

Hi-Do's agility and firepower make it the toughest challenge, requiring precise judgment and quick reflexes to bring it down. After defeating the helicopter, Morden himself will emerge for a final, desperate counterattack.

Additional Features:

The game also incorporates a "rescue prisoners" system. By freeing captured soldiers throughout the stages, players can gain weapon upgrades or bonus points, adding an extra layer of challenge and replay value. When the word “IN” appears, players can operate certain vehicles or weapons.

Since its release, Metal Slug has received widespread acclaim and is considered one of SNK's most successful games. Critics praised the hand-drawn pixel art, which showcases intricate details on the battlefield, from soldiers' expressions to explosion effects, all with an animation-like quality.

The game’s time limits, fast-paced action, and high difficulty have been key talking points among players. Though the controls are relatively simple, the level design and enemy variety keep the gameplay challenging, especially during the creative and intense boss battles. Additionally, the humor infused throughout, from character movements to enemy and environment design, keeps the atmosphere light-hearted, even in the midst of chaotic combat.

While the game’s high difficulty—especially in later levels—has been criticized for being too punishing for beginners, it has also become a hallmark of the series, attracting players who enjoy a tough challenge.

Overall, Metal Slug stands as a classic side-scrolling shooter, with its visuals, controls, and gameplay earning it a reputation as a masterpiece. It remains one of SNK’s flagship titles and has left a lasting impact on the global gaming market, influencing many later shooter games.