“秘密传递小特工（LittleTG）” 是一款专为青少年打造的沉浸式情报传递科普体验平台。平台以密码学发展史为脉络，精选替换法、移位法、图像法、栅栏法、实物法五种经典情报加密解密方案，通过五款剧情化互动游戏将抽象的密码学知识转化为可操作、可感知的探索体验。 青少年在 “小特工” 的角色扮演中，既能通过模拟历史场景（如 “鸡毛信传递”“情报员暗号”）�
active 2025-08-18 → 2025-08-21 (UTC)
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