《恐龍兄弟2》（Dyna Brothers 2）是Sega於Mega Drive平台推出的即時策略遊戲（RTS）。延續前作的獨特概念──玩家化身恐龍的創造神「The Egg」，以祂的神性力量指引恐龍族群，在沒有文明的侏羅星上抵抗外星侵略者。與前作相比，不僅對系統進行大幅度改善，更加入完整且幽默的故事模式，使遊戲在敘事與世界觀上變得更為鮮活。

美麗的綠色行星「侏羅星」上住著無數恐龍，牠們自古生活於此，卻從未發展出文明。某一天，一大片黑影籠罩天空，侵略者乘坐巨大的宇宙母艦降臨，各地同時飛出大量圓盤戰艦，外星人從四面八方展開攻擊。面對超越想像的科技，恐龍族幾乎全軍覆沒。

就在種族即將滅絕的瞬間，神秘的光芒降臨，他們的創造神「The Egg」甦醒，向絕望中的恐龍施與力量。得到神明庇佑的恐龍們奇蹟般反擊，終於把外星人擊退，母艦帶著剩餘的侵略者離開，侏羅星再次恢復和平。

然而並不是所有的敵人都離開這顆星球。外星人中的「哈卡塞博士」與少女「蒂亞拉」因故被遺留在地面，他們開始四處尋找倖存的外星人殘兵，並利用散落的UFO殘骸重新組建戰力，準備再次征服侏羅星。恐龍族的存亡再度迎來危機，而玩家作為創造神The Egg，必須指引恐龍族迎擊第二波入侵，並揭露侏羅星背後不為人知的真相。

故事模式中穿插大量動畫與角色對話，將外星人陣營與恐龍角色刻畫得生動有趣。哈卡塞沉迷科學，性格古怪又自大；蒂亞拉意外與恐龍建立羈絆；恐龍陣營中粗魯但重感情的「嘎烏嘎烏」、傲慢又天然呆的「巴塔萌」都成為玩家難忘的角色。後期登場的外星人克隆部隊「Dyna Brabo’s」更是以搞笑的方式活躍於劇情，讓原本可能偏嚴肅的劇情增添大量喜感。

最具特色之處，就是玩家不直接控制單一角色，而是如神一般發出指令，引導恐龍自動行動。恐龍會依照習性活動，草食恐龍會覓食與繁殖、肉食恐龍會捕食、飛行恐龍甚至能越過地形限制。玩家並非發號施令的「軍隊指揮官」，更像透過自然法則與奇蹟操控世界的「創世神」。

戰鬥與生態系統是遊戲的核心。恐龍需要吃草恢復體力，並在體力足夠時產卵繁殖。然而草若被吃光，草食恐龍又會大量餓死；肉食恐龍如果長時間沒有食物，也會反過來攻擊同伴。這種近乎「生態模擬」的機制，使策略不僅限於對抗敵人，也必須顧慮整個族群的生存動態。

玩家能使用多種類型的指令，例如改變天氣、創造植物、改造地形、進行基因操作、生產恐龍卵、指揮攻擊、防禦或誘導行動等。某些指令需要消耗「Power」──此能量來自恐龍持續活動時所產生的神力，因此擴張族群、保持生態平衡便成為遊戲進程的重要一環。

遊戲後期甚至引入更複雜的要素，包括透過植物阻礙敵方繁殖、引發天變地異來創造地勢、讓防禦型恐龍組成防線、或利用飛行恐龍跨越地形進行奇襲。雖然核心規則簡單，但組合策略非常深刻，使本作成為少數「生態模擬與RTS結合」的作品。

提供四種主要模式。故事模式包含45個以上的關卡，並以長篇劇情串聯。原始模式則提供難度不同的十關挑戰，適合喜歡純粹策略的玩家。練習模式內容完整且有角色對話，講解每一種恐龍與指令，非常適合新手入門。對戰模式則支援雙人遊玩，雙方輪替操控，可攻可守，甚至能藉環境設定實現不對稱戰局。此外，採用密碼續關，且密碼為易記的單字。甚至包含隱藏關卡與隱藏小遊戲「Dyna Fight」，讓兩名玩家進行更簡單直接的對決。

Mega Drive的遊戲畫面本就有限，但《恐龍兄弟2》的角色動畫極為可愛，恐龍與外星人都以誇張又富幽默的方式呈現。劇情動畫豐富，甚至為結局準備了豪華的演出。遊戲內還有特別密碼能欣賞恐龍的動作動畫。音樂方面本作極受好評，不論是輕鬆、悲壯、危機、逆轉等場景都配有高完成度的曲目。原先在前作被捨棄的BGM〈Last Letter to You〉也被收錄於本作，用於練習與原始模式通關後的音樂，成為粉絲心中代表性的旋律。

雖然是RTS，但本作對新手非常友善。初期恐龍與指令都不多，玩家能輕鬆掌握節奏。隨著劇情推進，更多生物、更多奇蹟與更多地形變化被加入，遊戲逐漸變得複雜，甚至在後期關卡加入迷宮、黑暗地形、單一生物求生、或近似解謎的特殊關卡。高難度關卡需要玩家深入理解生態連鎖反應、擴張領土、奇蹟使用時機、與對手的攻擊動線。喜歡挑戰的玩家甚至會利用遊戲機制進行速通、特定恐龍限制通關、或研究最佳生態配置，增加遊玩壽命。

《恐龍兄弟2》在發售當時並未大賣，原因包括Mega Drive市場規模有限、RTS非當時主流等。然而隨著時間推移，本作憑藉極高的遊戲完成度、可愛又充滿魅力的角色、優秀音樂與深度豐富的策略性，被越來越多玩家視為「Mega Drive 隱藏名作」。

1995年推出的「Sega Channel 特別版」進一步調整平衡、追加要素，使本作在愛好者間擁有相當高的評價。許多玩家認為本作比一代成熟許多，也比同時期的部分策略遊戲更具特色。雖然銷量普通，但憑藉幽默劇情與扎實的設計，作品成功留下獨特定位，成為系列實質上的完結篇。

Dyna Brothers 2 is a real-time strategy game (RTS) released by Sega for the Mega Drive. The game continues the unique premise of its predecessor—the player becomes “The Egg,” the creator god of the dinosaur race, guiding them with divine power as they resist an alien invasion on the uncivilized planet Jura. Compared with the first game, Dyna Brothers 2 features major system improvements and introduces a full, humorous story mode, greatly enriching the narrative and worldbuilding.

Story Setting: The Second Crisis of Planet Jura

The beautiful green planet known as Jura is home to countless dinosaurs. They have lived there since time immemorial, yet never developed any form of civilization. One day, a massive shadow covers the sky. A colossal alien mothership descends from above, unleashing fleets of disc-shaped vessels across the planet. From them emerge alien invaders who begin assaulting the helpless dinosaurs from every direction. Overwhelmed by the unimaginable technology, the dinosaur race is nearly wiped out.

Just as extinction seems inevitable, a mysterious light descends. Their creator god, The Egg, awakens and grants power to the desperate dinosaurs. With divine aid, they miraculously counterattack and finally succeed in driving the invaders away. The mothership departs with the surviving aliens, and peace returns once again.

However, not all enemies escaped the planet.
The alien scientist Dr. Hakase and the girl Tiara were left behind. As they search for surviving alien soldiers, they scavenge the wreckage of crashed UFOs to rebuild their forces, preparing for a second attempt to conquer Jura. The dinosaur race once more faces destruction, and the player—as The Egg—must guide them to resist the renewed invasion and uncover the secrets hidden behind Jura’s history.

The story mode is filled with animated scenes and character dialogue, making both the dinosaurs and alien cast lively and memorable. Dr. Hakase is obsessed with science and comically eccentric, Tiara unexpectedly forms emotional bonds with dinosaurs, while characters like the tough-but-kind GauGau and the arrogant-yet-dimwitted Batta-mon leave strong impressions. Later in the story, the alien clone squad Dyna Brabo’s appears, adding exaggerated humor that balances the more serious narrative elements.

Gameplay: A God’s-Eye RTS Where You Command Dinosaurs Through Nature

The most distinctive aspect of Dyna Brothers 2 is that the player does not control individual characters directly. Instead, you issue divine commands while dinosaurs act autonomously based on their instincts. Herbivores forage and reproduce, carnivores hunt, and flying dinosaurs can even bypass dangerous terrain. The player is not a military commander but a deity manipulating ecosystems and miracles.

The interplay between combat and ecology forms the core of the experience. Dinosaurs must eat grass to restore health, and when sufficiently nourished, they lay eggs to multiply. But if vegetation is depleted, herbivores will starve en masse. Likewise, hungry carnivores will turn on their own allies. This “ecosystem simulation” layer means strategy involves not only defeating enemies but maintaining the survival of your entire species.

Players can use a wide range of commands: changing the weather, growing plants, altering terrain, performing genetic manipulation, creating dinosaur eggs, directing attacks, forming defenses, or luring enemies. Many commands consume Power, a divine resource generated by the activity of your dinosaurs, making population management and ecological balance crucial for progression.

Later stages introduce deeper mechanics: using plants to disrupt enemy breeding, triggering natural disasters to reshape terrain, forming defensive lines of tank-like dinosaurs, or sending flying dinosaurs to launch surprise attacks. Despite simple core rules, the strategic combinations are highly intricate, making this one of the rare titles that merges RTS with ecosystem simulation.

Modes and Content: A Complete World With Multiple Ways to Play

Dyna Brothers 2 offers four major gameplay modes.
Story Mode includes over 45 stages connected through a lengthy narrative. Original Mode features 10 stages per difficulty level, providing pure strategic gameplay. Practice Mode is thorough and features character-driven tutorials explaining each dinosaur and command, making it ideal for beginners. Versus Mode allows two players to battle, alternating control between offense and defense and enabling asymmetric match configurations through terrain settings.

The game uses a password system for saving progress, with short, easy-to-remember passwords. Additionally, there are hidden stages and a secret minigame called Dyna Fight, a simple two-player combat game.

Visuals and Music: Charming Animation and Memorable Soundtrack

Although limited by the Mega Drive hardware, the character animations in Dyna Brothers 2 are impressively expressive. Dinosaurs and aliens move with exaggerated, humorous motions, and the story scenes include surprisingly detailed animations. A special password even lets players view dinosaur animations freely.

The soundtrack is widely praised. It features relaxed themes, tragic melodies, crisis tracks, and triumphant reversal songs—all well composed and fitting for their scenes. The track “Last Letter to You”, originally cut from the first game, appears here as the clear music for Practice and Original Mode, becoming a fan favorite.

Gameplay Experience and Difficulty: Beginner Friendly With Surprising Depth

Despite being an RTS, the game is very accessible. Early stages involve only a few dinosaurs and commands, allowing new players to learn gradually. As the story progresses, more species, miracles, and terrain changes are introduced, increasing the complexity. Later stages include maze-like maps, darkness mechanics, single-unit survival missions, and puzzle-like levels. Higher difficulties demand a full understanding of ecological cycles, territory expansion, miracle timing, and enemy movement patterns.

Fans seeking challenge often engage in speedruns, “single-species” clears, or experiments on optimal ecological setups, giving the game long-lasting replay value.

Market Reception: A Niche but Highly Respected RTS Gem

Upon release, Dyna Brothers 2 did not enjoy strong sales, mainly due to the limited Mega Drive market and RTS being a niche genre at the time. However, as years passed, the game gained a reputation as one of the Mega Drive’s hidden gems, appreciated for its strong game design, charming characters, excellent music, and deep strategic systems.

The 1995 Sega Channel Special Edition further refined balance and added features, earning high praise among enthusiasts. Many players believe the sequel is far more polished than the first game and stands out sharply from other strategy titles of its era. Although not a commercial hit, its distinct humor, heartfelt story, and meticulously crafted mechanics gave it lasting recognition—serving as the series’ de facto conclusion.