1/8日まで FREE [Prime] Yooka-Laylee and the Impossible Lair

Prime Game

12/10日までFREE [HumbleBundle] Seven Enhanced Edition

https://www.humblebundle.com/store/seven-enhanced-edition-free-game

1/1日までFREE [Prime] Yooka-Laylee

Free, Prime Gaming

FREE [GOG] The Witcher: Enhanced Edition

To get The Witcher: Enhanced Edition free of charge and keep it forever, you need to download or update GOG GALAXY app on PC. Once you do that, go to "Recent" view and press the giveaway banner.

12/9 10:00までFREE [Steam] Minion Masters - Uprising DLC

https://store.steampowered.com/app/1467210/Minion_Masters__Uprising_DLC/

FREE [EPIC] Post Scriptum - SDK

https://www.epicgames.com/store/en-US/product/post-scriptum/home

12/11～12/18 01:00までFREE [EPIC] Tyranny - Gold Edition

https://www.epicgames.com/store/en-US/product/tyranny/home

12/11～12/18 01:00までFREE [EPIC] Pillars of Eternity - Definitive Edition

https://www.epicgames.com/store/en-US/product/pillars-of-eternity/home

FREE [EPIC] CRSED: F.O.A.D.

https://www.epicgames.com/store/en-US/product/crsed-f-o-a-d/home

12/5～12/11 01:00までFREE [EPIC] Cave Story+

https://www.epicgames.com/store/en-US/product/cave-story-plus/home