Critical Role is unlike a regular Dungeons & Dragons game in many ways. Most tables cannot hope to match the production values, scope, and sheer acting talent of Critical Role and its cast in their own home games. In other ways, however, Critical Role is like any other campaign. One of these ways is players' ability to alter the story with a single radical decision.
Source:https://www.cbr.com/player-decisions-that-changed-critical-role/