Papers Please is a game where you play a border official in a small totalitarian country, checking passports and identity documents against a small handbook to try and spot any discrepancies or forgeries. As a concept it’s basically one step removed from those sodding hidden object games that plague Steam like a bad case of athlete’s foot, but Papers Please excels so well in its setting and execution that it’s ended up being one of the most engrossing puzzle games I’ve played in the last couple of years.