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Subnautica vs Portal 2

Which game takes longer to beat? Here's the side-by-side breakdown.

VS
MetricSubnauticaPortal 2
Main Story29h8h
Main + Extras42h13h
Completionist67h22h
Released20182011
DeveloperUnknown WorldsValve

Verdict

Subnautica is the longer game by about 29 hours on a typical playthrough (42h vs 13h for Portal 2).

If you only have time for one and prefer a tighter experience, Portal 2 wraps up faster. If you want the longer ride, go with Subnautica.

For completionists, Subnautica clocks in at 67 hours total, while Portal 2 sits at 22 hours.