Adding leaderboards and achievements

So we know why leaderboards and achievements are a good thing. The first thing we need to do here is plan our achievements. A leaderboard is a high score table, and that's it! There isn't a great deal of things we can do to make them different. The achievements, however, deserve some discussion.

Planning the Snake achievements

At first, it might seem that a really simple implementation of a really simple game, like our Snake game, isn't deep enough to have many, or even any, achievements. So what follows is a quick brainstorming session of achievement ideas:

  • Score 10, 25, 50, 100, and so on: Simply unlock achievements at different levels of high score.
  • Snake length: Simply unlock achievements at different snake ...

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