Download size

How many GB is A Bad Day for a Hangover?

21 GB

That is more than the typical Adventure game, which needs about 5 GB.

Leave at least 31 GB free: games need headroom to unpack updates.

The figure is the storage Steam lists as required for this game, not a measured download.

You awaken with the worst of hangovers in a nuclear bunker with supplies running low, the only chance of survival is to scavenge for tinned goods in the robot infested nuclear wasteland above before the town is nuked again