Hockey overtime can indeed be a bit different from other sports. In many leagues, the overtime period is shorter than regular periods, often 5 minutes, and is typically played with 3 skaters and a goalie per side, rather than the usual 5 skaters. This makes for a faster, more open game with increased chances of scoring. If there's still no winner after overtime, the game might proceed to a shootout. If you'd like a comprehensive overview of the rules, I recently read an article on the website
https://athletesite.com/hockey/hockey-overtime-rules/ "Hockey Overtime Rules" that you might find helpful!