SUPERHOT: main story about 3.1 hours; story with some extras about 4.8 hours; 100% completion about 1.3 hours. These are IGDB player-submitted averages from 7 submissions, not a deadline or a prediction of your pace.
Source: IGDB player submissions
Community playtime data is not available for SUPERHOT yet. Tracked platforms include PlayStation.
Game Tales keeps what happened between you and a game in one Tale you can keep building.