https://store.steampowered.com/app/3908440/Play_a_game_with_me/
As a nameless adventurer, you must go to meet a stranger and accept his terms of the game. You hear a voice from the pitch darkness, inviting you to play a deadly game where your life is at stake. Are you up to the challenge?

INSTRUCTION FOR ACTIVATION:

1. You must download and install Steam http://steampowered.com/download/SteamInstall.msi
2. Log in to your account or register a new one.
3. Go to the "My Games" section and select "Activate via Steam ..." and enter the key received after payment.
4. After activation, the game will appear in the list of games (Library) and you can download it