『Mass Effect 3』は、シューター、RPG、アドベンチャー要素を融合させたメインゲームです。プレイヤーはシェパード司令官となり、全銀河を滅亡させようとする機械種族リーパーズに対する人類最後の戦いを指揮します。物語の核心は、多様な異星種族との同盟構築と、過去の選択が最終決戦に影響を与える点にあります。戦闘では、ブラインドファイアや強化された近接攻撃に加え、分隊メンバーのバイオティックとテック能力を組み合わせた強力な「パワーコンボ」が特徴です。オンライン協力マルチプレイヤーモードでは、獲得した装備や能力がシングルプレイの戦力準備度に反映されます。本編には多数のDLCが存在し、リマスター版もリリースされています。
","tokens":{"input":2565,"output":170,"total":2735}}物語の中心的な前提は、圧倒的な機械の脅威に対し、しばしば懐疑的な異星の派閥を団結させることにあります。成功は戦闘能力だけでなく、三部作を通じて築き、維持してきた同盟関係にかかっています。プレイヤーは、タフな兵士ジェームズ・ヴェガや、新たに物理的な肉体を得た信頼できるAIであるEDIなど、ベテランや新顔を含む多様な分隊メンバーをリクルートする必要があります。培われた人間関係や意思決定の全てが、最終的な対決で利用可能なリソースと支援に直接影響を与えます。
\n\nゲームプレイは戦術的な戦闘を重視しています。シェパードは強化された一連のアビリティを使用し、遮蔽物を利用しない射撃(ブラインドファイア)や、より強力な近接攻撃といった新しい戦闘機動が可能です。重要なメカニクス上の特徴は、分隊メンバー間でバイオティック(超能力)とテックの能力を組み合わせ、破壊的なパワーコンボを解き放つことで、銃撃戦に戦略的な深みを加える点です。
\n\nこのゲームの独自性は、以前の作品から引き継がれたプレイヤーの選択と結果へのコミットメントにあります。目先の目標は生存ですが、物語の構造は、勝利を達成するためにパートナーが究極の犠牲を払うことを要求される可能性があり、リーダーシップの精神的負担を管理することをプレイヤーに強います。
\n\n最終的な戦闘部隊を構築するには、これらの人間関係を慎重に管理し、絶望的に思える困難を乗り越えるために専門化されたクラスと種族を配備する必要があります。プレイヤーは、多様な種族とクラスからチームを編成し、そのスキルを組み合わせて不可能な状況を克服します。
\n\n統合された協力マルチプレイヤーモードでは、プレイヤーはオンラインでチームを組み、ますます難しくなる敵との重要な紛争地帯を解放するために協力できます。このモードで得られた進捗――戦士のカスタマイズ、新しい武器、アーマー、アビリティの獲得――は、シングルプレイヤーキャンペーンで使用される戦争準備統計に直接貢献し、二つの体験間に具体的な繋がりを提供します。
\n\nこのメインタイトルは、物語、ミッション、キャラクターアークを拡張する11の異なるDLCパッケージによって支えられています。また、現代的な基準に合わせて体験を向上させるリマスター版もリリースされていますが、この特定のタイトルにはスタンドアロンの拡張版は含まれていません。対応プラットフォームは、Xbox 360、PC (Microsoft Windows)、PlayStation 3です。
","tokens":{"input":2757,"output":808,"total":3565}}Strong violence and sex scenes

A remaster of the original Mass Effect 3 included in the Mass Effect: Legendary Edition bundle.

Mass Effect: Genesis 2 is an "interactive backstory comic". It is an updated version of Mass Effect: Genesis, which was originally created for Mass Effect 2. Genesis 2 fills the role of Mass Effect and Mass Effect 2 for new players to the series, introducing them to the story of the first two games in the Mass Effect trilogy and allowing them to make some of the major plot decisions that players could make by playing through the previous games. The player is prompted to begin Genesis 2 after character creation, but using it is optional. There are two versions of the comic, one each for a male and female Commander Shepard.

When a sinister conspiracy targets Commander Shepard, you and your team must uncover the truth, through battles and intrigue that range from the glamour of the Citadel's Wards to the top-secret Council Archives. Uncover the truth and fight alongside your squad – as well as the cast from the original Mass Effect and Mass Effect 2, including Urdnot Wrex!

Mass Effect 3: Reckoning was the final, free multiplayer DLC for Mass Effect 3, which added new playable character classes, seven new weapons, and two new pieces of gear to the game's co-op multiplayer mode. The expansion introduced a variety of new recruits, such as the Geth Juggernaut, Alliance Infiltration Unit, and Krogan Warlord, along with weapons like the Biotic Hammer and Geth Spitfire Assault Rifle to help fight the Reaper threat.

Omega has been seized by one of Cerberus' most accomplished and brilliant agents, General Oleg Petrovsky…and Aria T'Loak is plotting her revenge. To reclaim her domain, she must team up with Commander Shepard. Join Omega’s infamous leader in her fight to retake the notorious black market station. Navigate Omega’s seedy underbelly as Aria joins your squad and you witness her legendary biotic powers and unrelenting ruthlessness first-hand. Help Nyreen Kandros, the valiant turian leader of the Talon mercenary group, as she fights to free the enslaved people of Omega. Face down fearsome new enemies, including the Cerberus-manipulated Reaper, the Adjutant. Shape Omega’s future through four death-defying missions, and strike a devastating blow to the Illusive Man's plans.

Mass Effect 3 plunges you into an all-out galactic war to take Earth back from a nearly unstoppable foe – and how you fight that war is entirely up to you. Groundbreaking interactive storytelling drives the heart-pounding action in which each decision you make could have dire and deadly consequences. You are Commander Shepard, the only one who can save Earth from annihilation. BioWare makes its debut on the Nintendo console with the gripping blockbuster game of the year: Mass Effect 3 - coming to the Wii U console with brand new features and content that fully take advantage of the Wii U hardware. Command the battlefield like never before by using the Wii U GamePad to issue commands and unleash devastating attacks. Bonus content includes a new mission and squad member, an exclusive new weapon, the Extended Cut ending, and an interactive backstory experience detailing previous events in the Mass Effect universe.

The battle to save the galaxy rages on and a familiar foe returns in the largest downloadable content pack to-date for Mass Effect 3 multiplayer! Mass Effect 3: Retaliation ups the challenge by adding treacherous environmental hazards to existing maps and will introduce the infamous Collectors as a new enemy faction in multiplayer. Also making its way into the Mass Effect 3: Retaliation pack is a brand-new challenge system that will reward players for their accomplishments in multiplayer. This new feature will give players the ability to track and compare progress across different multiplayer challenges. The entire pack will include: New “Hazard” Versions of Existing Maps: Wage war across six maps as a regular rotation of Firebases will be introduced to different hazards and traps. Survive the onslaught of Acid, Lightening, Meltdowns, Sandstorms, Swarms and Whiteouts! New Deadly Enemy Faction: Prepare to face off against the Collector Praetorian, Scion, Abomination, Trooper, and Captain. Reports have also come in that Cerberus has enlisted the Dragoon to their ranks and the Geth are deploying new Drones to the battlefield. New Unlockable Weapons: The Collectors have also brought deadly new weapons to the fight: the Collector Assault Rifle, Sub-Machine Gun, and Sniper Rifle. Unlock these weapons and new equipment upgrades to build to your arsenal. New Class Kits to Unlock: A host of new characters have joined the war to fight this new threat, including the Turian Havoc Soldier and Turian Ghost Infiltrator. Additional class kits will be added as the weeks progress. New Powerful Upgrades: Outfit your weapons with three new ammo modifications and fortify your gear with five unique upgrades to defeat even the toughest foes. New Multiplayer Challenge Feature: Think you are the best soldier in the Alliance? Make sure to track your progress in the new “Challenges” database. Complete various multiplayer assignments and feats of strength to unlock titles and banners to display in-game, and then compare your progress against your friends.

Something lurks in the dark corners of space, something powerful enough to kill a Reaper. Shepard must discover the most closely guarded secret in the galaxy before the Reapers silence it forever. Mass Effect 3: Leviathan expands upon the events of Mass Effect 3, with gripping and emotional storytelling, compelling new characters, and powerful weapons and upgrades. Unravel the dark history about the Reapers as you race across the galaxy to discover the Leviathan.

The Mass Effect 3: Earth DLC is a free multiplayer expansion for the game that added new maps, characters, weapons, and a higher difficulty level to the game's co-op multiplayer mode. Players can select from six new human N7 classes, use three new weapons, play on maps located on Earth (Firebase Rio, Vancouver, and London), and face challenges on the new "Platinum" difficulty level.

The Extended Cut downloadable content adds to and modifies the ending of Mass Effect 3, in response to fan feedback.

The Mass Effect 3: Rebellion Pack was a free multiplayer expansion for Mass Effect 3. It added new maps (Firebase Jade and Firebase Goddess), three new weapons, and six new playable multiplayer characters from species affected by the Reaper invasion, such as Quarians and Vorcha. The pack also introduced a new in-mission objective and a new gear slot for persistent bonuses, enhancing the cooperative multiplayer experience.

The Mass Effect 3: Resurgence Pack is a free multiplayer expansion for Mass Effect 3 that adds two new maps (Firebase Condor and Firebase Hydra), six new playable characters (including Asari Justicar, Krogan Battlemaster, Batarian Soldier, Batarian Sentinel, Geth Engineer, and Geth Infiltrator), three new weapons (Striker Assault Rifle, Kishock Harpoon Gun, and Geth Plasma SMG), and new consumables like Strength Enhancer and Targeting VI. These items can be unlocked through in-game reinforcement packs purchased with in-game credits.

Cerberus has attacked Eden Prime and taken over a human colony. Alliance forces are stretched too thin fighting the Reapers and are unable to offer support. Intel indicates that Cerberus is after a Prothean artifact and has found it. Shepard must infiltrate the colony and recover the artifact. From Ashes includes a powerful new and permanent squad member – the last surviving Prothean. Learn more about the last days of the Prothean empire, before the Reapers wiped out their race. From Ashes also includes a new weapon, the Prothean Particle Rifle, and new appearances for every squad member.