You need to make sure that the game is first and foremost not repetitive and then if you toss in some replayability it's icing on the cake.

要记住最重要的是确保游戏不无聊重复然后在此基础上添加可重玩的功能使其更加完善。

youdao

Oh, girl, you think too much. Just go and have a nice evening. If you like the guy and he likes you, it's just icing on the cake.

你这个姑娘想太多了啦，开心去吃个晚餐就对了。假如你喜好谁人家伙，他也喜好你，就当锦上添花捡到的啰。

youdao

It's good breaking abilities and stiffer suspension is just the icing on the cake.

这是很好的突破能力和更硬的悬挂只是锦上添花。

youdao

Then there's the icing on the cake, except that it's so important as to be part of the cake -- brilliant segments of animation, by Todd McFarlane, in which Francis's most perfervid fantasies come to life.

WSJ: The 'Bourne' Identity Crisis