Unlock! Short Adventures: The Flight of the Angel

You are undercover at the Carnival of Venice with a secret mission to complete before the clock runs out, and not every mask is friendly. The adventure is thirty cards and the free Unlock app, which times you, checks codes and offers hints. Enter the final code and the mission is done. You explore by revealing numbered cards. Pair a red card with a blue one by adding their numbers and take the card that matches the total. Machines ask for codes, and a few cards punish a careless choice by taking minutes away. This is the medium-difficulty entry in the Short Adventures line and, in our experience, the most satisfying of the three, with puzzles that reward looking closely at the art. Give it to a couple or a trio who have solved one Unlock case and want half an hour of something trickier.