1988 年，JALECO 在紅白機（Famicom/NES）上推出《西遊記世界》，這是一款在台灣與日本玩家心中都具有重要地位的動作角色扮演遊戲。雖然遊戲以《西遊記》為題材，但對於資深玩家來說，其核心玩法其實深受 SEGA 經典名作《神奇男孩：怪獸大陸》的影響。

於 1988 年 11 月 11 日正式發售。實際上是在 JALECO 獲得 SEGA 授權後，將《神奇男孩》的遊戲系統與關卡設計完整移植，並重新包裝成《西遊記》風格。這種「換皮不換骨」的做法在當時並不罕見，但也使得本作在缺乏《神奇男孩》移植版本的紅白機平台上大放異彩。

劇情描述世界被牛魔王統治，陷入黑暗與混亂。孫悟空肩負拯救世界的任務。然而與原著不同，一開始並非神通廣大，而必須從基礎裝備出發，一路擊敗各地妖魔首領，拯救被囚的村民，最終深入火焰山，與牛魔王展開最終決戰。

操作上，以 A 鍵跳躍、B 鍵進行近身攻擊。遊戲的核心樂趣在於其 RPG 成長要素：擊敗敵人會掉落金錢，可在村莊或商店購買更高階的護甲、盾牌、鞋子以及強力武器。除了主武器之外，還能獲得各種消耗性副武器，如火球、閃電或自動追蹤敵人的旋風，這些在面對高難度魔王戰時至關重要。

在市場上獲得相當正面的評價，玩家讚賞其流暢的操作感與豐富的裝備升級系統。雖然遊戲難度偏高，且不支援存檔（需一次破關或使用選關密技），但精緻的關卡設計使玩家欲罷不能。因為本作的成功，JALECO 後續甚至推出完全原創的續作《西遊記世界 2》，將風格轉向更純粹的動作闖關。對於老玩家而言，《西遊記世界》不僅是兒時的挑戰回憶，也代表紅白機末期動作遊戲設計的高水平。

n 1988, JALECO released Saiyuuki World on the Famicom (NES), an action RPG that holds a special place in the hearts of both Taiwanese and Japanese players. Although it carries the Journey to the West theme, for seasoned gamers, the game’s core mechanics are deeply rooted in SEGA’s classic Wonder Boy in Monster Land.

Released on November 11, 1988, Saiyuuki World was actually created after JALECO obtained a license from SEGA, allowing them to transplant the gameplay systems and level design of Wonder Boy into a Saiyuuki-themed package. This kind of “reskinning” was not uncommon at the time but allowed the game to shine on the NES/Famicom platform, which lacked official Wonder Boy ports.

The story follows the world under the tyrannical rule of the Great Demon King, Ox Demon King, plunging the lands into darkness and chaos. Players take on the role of Sun Wukong, tasked with saving the world. Unlike the original tale, Wukong does not start with divine powers; he must begin with basic equipment, defeat various demon leaders, rescue imprisoned villagers, and ultimately confront the Ox Demon King at Flaming Mountain in the final battle.

Gameplay focuses on simple yet responsive controls: the A button for jumping and the B button for melee attacks. The RPG elements revolve around progression and equipment upgrades. Defeated enemies drop money, which can be spent in villages or shops to acquire better armor, shields, boots, and weapons. Beyond the main weapon, players can obtain consumable sub-weapons like fireballs, lightning bolts, and homing whirlwind attacks, which are especially crucial during challenging boss fights.

Saiyuuki World received positive acclaim, widely praised for its fluid controls, engaging RPG mechanics, and richly designed levels. While the difficulty is high and the game lacks a save system—requiring players to finish in one run or use stage-selection codes—the overall design was compelling enough to keep players engaged. Its success led JALECO to produce a fully original sequel, Saiyuuki World 2, which leaned more toward pure action-platforming. For retro gamers, Saiyuuki World is remembered not only as a childhood challenge but also as a standout example of late-era NES action RPG design.