The adventure game Agatha Christie: The ABC Murders is currently a freebie at Indiegala. It has very positive reviews on Steam. Link: https://freebies.indiegala.com/agatha-christie-the-abc-murders . Link to Steam reviews: https://store.steampowered.com/app/374900/Agatha_Christie__The_ABC_Murders/ .
Description from Indiegala:
Your weapon is your knowledge. Your wits will be put to the ultimate test! The ABC Murders is an adventure and investigation game adapted from the classic Agatha Christie novel. The player embodies the famous Hercule Poirot in a 3rd person perspective adventure game packed with mysteries. Once again, the private detective will find himself up against a mysterious opponent who goes by the name of "ABC".
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