[2,300 yen → 0 yen] Antarctic horror ADV “Conarium” inspired by Lovecraft's “At the Mountains of Madness,” free for Prime members!

Amazon Game Studios has announced the lineup of PC games that will be available for free in October 2026 through “Amazon Luna,” a service for Amazon Prime members.

The Lovecraftian horror game *Conarium* is available for free! Also included is *WarBreeds*, a sci-fi RTS where you genetically engineer soldiers.

A total of 10 PC games will be available for free in October.

*Conarium*, which became available for free today, October 9, is a first-person horror adventure inspired by H.P. Lovecraft’s novel *At the Mountains of Madness*.

The story serves as a sequel to the original novel and features multiple endings.Players take on the role of Frank Gilman, who awakens at a research base near the South Pole and discovers that he has died and been resurrected—but something has changed. You must explore the deserted base and a world of dreams and visions, gather clues to unravel the mystery, and escape from a terrifying entity.

New Lovecraftian Horror Game “Conarium” Announced—Inspired by the Novel “At the Mountains of Madness” | Game*Spark - Domestic and International Gaming News Site

Publisher Iceberg Interactive and developer Zoetrope Interactive have announced *Conarium*, a new horror adventure game inspired by H.P. Lovecraft’s novel.

https://www.gamespark.jp/article/2016/10/07/69131.htmlRead more »

In addition, the sci-fi RTS *WarBreeds* is available for free starting today.

The game is set in a galaxy where a great empire has fallen due to famine, plague, and war. Four clans, once enslaved, have stolen the empire’s genetic technology to modify their own DNA and now vie for planetary supremacy.A key feature of the game is the ability to absorb the genes of defeated enemies to enhance your troops’ abilities and customize soldiers by combining biological weapons such as lasers, missiles, heat rays, and ion cannons—with over 35,000 possible combinations.

In addition, on October 16, the narrative RPG *Vampire: The Masquerade – Swan Song* will be released;on the 23rd, the horror game *Ad Infinitum*, set in the trenches of World War I, and on the 30th, the shop management sim *Trash Goblin*, where you dig up junk, polish it, and sell it to customers.

The lineup of free titles for October is as follows (dates are in Japan Standard Time).

Currently Available

• *Five Nights at Freddy's: Into the Pit* (Epic Games Store version)

• *DOOM* (2016 Edition) (GOG.com version)

• *Conarium* (GOG.com version)

• “WarBreeds” (GOG.com version)

October 16

• "Vampire: The Masquerade - Swansong" (Epic Games Store version)

• "Caravan SandWitch" (Amazon Games app version)

October 23

• "Ad Infinitum" (Epic Games Store version)

• "Time Travel: Escape Room Game" (Legacy Games version)

October 30

• "Trash Goblin" (Epic Games Store version)

• "Kiborg" (Amazon Games app version)

[2,246 yen → 0 yen] The iconic violent FPS 『DOOM』 (2016) is available for free to Amazon Prime members! The first game in the reboot series that brought the franchise back to life | Game*Spark - Domestic and International Gaming News Site

A total of two PC games are being given away for free, including the 10th-anniversary title “Five Nights at Freddy’s: Into the Pit.”

https://www.gamespark.jp/article/2026/10/02/173061.htmlRead more »

Amazon Luna is a service available to all Amazon Prime members. While free PC games were once distributed under the name “Prime Gaming,” this program has now been integrated into the cloud gaming service Amazon Luna. The free games are available to users in Japan, but the cloud service itself is not accessible from Japan.

The free giveaway is available for a limited time, so be sure to grab the titles listed above.

*The price in the article headline is based on the Steam version.