Historically, draw was possible due to both players getting the same amount of points ("jigo"), but when playing under most popular modern rulesets, fractional

Historically, draw was possible due to both players getting the same amount of points ("jigo"), but when playing under most popular modern rulesets, fractional komi serves as a tiebreaker. Games can be voided due to a complex ko or superko. There are modern rulesets with non-fractional komi such as the Ing rules (komi = 8.0) where jigo is possible. But under those rules, in the case of jigo, black wins... making komi effectively the same as 7.5. For multiple games (e.g.: jubango), a draw can be declared if both players win the same number of games.