As a quick overview, answer yourself the following questions:
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Motivation(理念) 
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Sum up your game idea in one sentence. If you can't, it's too complicated. 用一句话总结游戏的想法,如果做不到就太复杂了 
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Who's the target group? Why would they choose your game over the million others that exist? 谁是目标群体?为什么选择这个游戏? 
 
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Game type(游戏类型) 
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Point of view (camera)? What character(s) does the player control (if any)? 
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Time- or turn-based?即时或回合制 
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Genre, setting, background story? (If applicable) 
 
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Gameplay 
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What is the start state, what is the end state? 开始和最终状态? 
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What resources does the player manage? How are resources gained, transformed, spent? E.g. speed, gold, health, "points". 资源转换,速度,金,生命值,点数。 
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How does the player interact? I.e. rules, challenges, game mechanics. 如何相互作用,即规则、挑战、游戏机制 
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What state is considered winning, and what losing? 胜利失败状态? 
 
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Media assets(媒体资产) 
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Which media will you need? How will you get this content? 需要哪些?如何得到
 models, terrains; materials, textures; audio, sound, music; video; spoken/written dialog; levels, quests, stories; AI scripts
 
 
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Interface 
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Can you achieve a high degree of input control? Even minor navigation and interaction glitches make the game unsolvable.微操作控制 
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Clearly reflect current status, and changes in game states. E.g. health/damage.磨损消耗 
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Clearly reward good moves and discourage bad ones.奖惩策略