Why don’t you go ahead and try this game with your friends? These are the basic rules:
1.Of course, the word has to start with the previous word’s last syllable.
2.A word can only be used once.
3.If the word ends in ん, the next player loses.
4.If a word’s last kana has a “long sound” (chuon), there are three different possibilities. (ex.: きょうとう):
4.I.Use the chuon as a vowel. (In the example, オcould be used as the beginning of the following word; e.g.オレンジ.)
4.II.Ignore the chuon. (In the example, the next word could begin with ト; e.g. トマト. )
4.III.Let the next word begin with a chuon. (e.g. とうきょう)