Getting a game into the Top 40s and 50s takes as little as 7-10 votes. The important thing here is rank, many games up to the Top 110 also had 7-10 votes but since most of the votes were low-mid rank is why the total ranking was low.
Beyond that it gets much more difficult (BotW had 39 votes and Mario 64 had 36 votes). Along with very high scores: BotW has 18 votes in the Top 5 and SM64 has 7 votes in the Top 5.