这是一款色彩鲜艳的3D卡通合作冒险平台游戏。你将扮演好奇又兴奋的紫色小猫Furple，或是独立且有点小脾气的鱼Finn。你们这对意外的搭档要一起逆流而上，前往冰山，因为Furple的家人正面临生命危险。旅程中会穿过未被探索的雨林、充满魔幻氛围的河流洞穴，还有危险的沼泽，最后才能回到冰山。沿途会遇到各种野生动物，得先分清谁是朋友谁是敌人。
游戏是专门为两名玩家设计的非对称合作系统。两名队友必须沟通、配合并完全信任对方，才能解开谜题并击败每关的Boss。随着旅程推进，河流主题的挑战会越来越多，机制和谜题也会不断变化，合作是通关的关键。Boss战会比较紧张，但只要掌握了之前学到的合作技巧，保持冷静一起行动就能取胜。游戏也支持通过Steam Remote Play Together或Parsec和朋友在线联机，不过这些服务的问题需要联系对应平台的客服。
玩这款游戏需要手柄。如果只有一个人，也可以选择LoneWolf模式，用一个手柄同时控制两个角色，协调好自己大脑的左右半球，这是另一种单人挑战。
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