Amazon adds four new free games to Luna, including a classic first-person shooter

Amazon recently announced this month's lineup of games that Prime members will be able to download and play through Luna (formerly Prime Gaming). While two games from the lineup were added last week, the company has now added four more for subscribers to claim and add to their libraries. Technically, there are three new additions to claim, but one of them is a package containing two titles.

New free games added to Luna

The first free game is Botany Manor (Epic Games Store), which is a relaxing first-person puzzle game set in England in 1890. You play as Arabella Greene, a retired botanist who is trying to complete her research book, Forgotten Flora. To do that, you'll need to explore a large Victorian manor and its surrounding gardens while figuring out how to grow different rare plants.

Each plant requires specific conditions to grow, and you'll need to search rooms for clues found in books, letters, posters, and different objects. As you progress, you'll also learn more about Arabella's career and the challenges she faced as a female scientist during the 19th century. 

The next free addition is DOOM + DOOM II (GOG), which brings together enhanced versions of id Software's two classic first-person shooters. The package contains the original DOOM and DOOM II alongside a huge amount of additional content, including TNT: Evilution, The Plutonia Experiment, Master Levels for DOOM II, Sigil, No Rest for the Living, and Legacy of Rust.

Altogether, players get 187 mission maps and 43 deathmatch maps. The enhanced release also supports cross-platform co-op and deathmatch for up to 16 players, community mods, improved performance with support for up to 4K, and modern controller support. Players can also switch between the original soundtracks and newer versions by Andrew Hulshult.

Finally, we have Drop Duchy (Epic Games Store), which takes the familiar idea of a block-dropping puzzle game and mixes it with strategy, deckbuilding, and roguelite mechanics. Instead of simply placing blocks to clear lines, you're using them to build a kingdom, gather resources, recruit troops, and prepare for battles against enemy armies.

The resources collected during each round can be used to strengthen your army and improve your chances in upcoming battles. There are also more than 110 unique cards, over 100 missions, and three playable factions: The Duchy, The Republic, and The Order.

It's also important to keep in mind that all of the new additions are available to claim until October 14. If you manage to add them to your library before that, they'll be yours to keep forever.