RuneLite is a free, open-source and super fast client for Old School RuneScape

RuneLite

OpenMW is a new engine for 2002's Game of the Year, The Elder Scrolls 3: Morrowind.It aims to be a fully playable (and improved!), open source implementation of the game's engine and functionality (including mods).You will still need the original game data to play OpenMW.

OpenMW

Unofficial open source engine re-implementation of the game Morrowind

Albion Online is a sandbox MMORPG set in an open medieval fantasy world. It has a fully player-driven economy; all equipment items are player-crafted. You can freely combine armor pieces and weapons in our unique classless system – you are what you wear. Explore the world and tackle challenging PvE content. Engage other adventurers in small- or large-scale PvP, and conquer territories. Gather. Craft. Trade. Conquer. Leave your mark in the world.

Albion Online

Crawl is a fun game in the grand tradition of similar games like Rogue, Hack and Moria. The objective is to travel deep into a subterranean cave complex and retrieve the Orb of Zot, guarded by many horrible and hideous creatures.If you have never played Crawl (or a similar game) before, select the tutorial from the starting menu. The tutorial explains the interface in five easy lessons. Once you're familiar with the controls, you may want to play a few games using hints mode.This is the Stone Soup version of Dungeon Crawl.

Dungeon Crawl Stone Soup

Flare is an open source, 2D action role playing game. Its gameplay can be likened to the games in the Diablo series.The Empyrean Campaign is a game made by the Flare team. The story begins with the player being exiled from their homeland of Empyrean, resulting in them embarking on a quest to regain entry. This journey takes the player through many regions, with plenty of side quests along the way.The player can choose between three different character classes with distinct strengths and skills. Each character class has unique powers to unlock and improve as they level up.Brute - A close-quarters fighter who utilizes swords, throwing-knives and other bladed weapons.Scout - A ranged weapon and trap specialist who primarily uses bows to defeat its foes.Adept - A spell caster who challenges enemies with fire, ice and lightning-based attacks.Players may find or buy different items to protect themselves from attacks or boost their stats. These include potions, scrolls, weapons, armor, and magical artifacts. Along with the normal equipment, there are enchanted, rare, and unique pieces of gear that provide extra bonuses.The Flare engine is licensed under GPL 3, whereas the Empyrean Campaign is licensed under CC-BY-SA 3.0. Both the engine and the game content are being actively developed, including new features, art, and content.

Flare: Empyrean Campaign

2009scape is a free, open-source launcher for Runescape 2009 Emulation servers

2009scape

Launcher for Runescape 2009 Emulation Servers

HDOS, or High Detail Old School, is a free-to-use third party client for Old School RuneScape that emulates the era of 2008-2011 RuneScape HD.

HDOS

2006Scape is a free, open-source Runescape 2006 Emulation server

2006Scape

2006Scape is a free, Runescape 2006 Emulation server

OpenNox is a modern implementation of a Nox game engine. It &lt;em&gt;requires a copy&lt;/em&gt; of Nox game installed. The best way to do so is to install GoG [1] version from Lutris [2].[1] https://www.gog.com/game/nox[2] https://lutris.net/games/nox/

OpenNox

OpenNox is a modern implementation of a Nox game engine

OpenRSC is a free, open-source launcher for various Runescape Classic (2001-2004) servers

OpenRSC

Launcher for Open RuneScape Classic Servers

Choose from 12 different starting builds with various play styles, as you travel through caves, lava, swamp, ice, and desert to fight 40 different monsters and conquer 16 bosses using a streamlined Active Time Battle system that supports 8 vs 8 fighters.During your journey, you'll find new gear to purchase, blacksmiths that can upgrade your gear, traders that can grant you special skills and items, plus a deep endgame.The game features sound effects, music, full keyboard/mouse rebinding support and an optional high-res texture pack for 4K displays. Play either single-player or cooperatively over the Internet/LAN.

choria

Finally, an MMORPG that's all about grinding and doing chores.

Blast your way through ten levels and boss fights in this top-down shooter action RPG.
      
        Utilize over 15 different weapons, including melee, pistols, shotguns, rifles, rocket launchers, crossbows, and miniguns
        Fight thousands of zombies, spiders, bats, skeletons, demons, aliens and more
        Discover rare items and secrets that sprawl across dungeons, woods, caves, cities, desert, hell, and alien worlds
        Customize your character with skill points and over 25 different gear mods
        Play through the campaign multiple times for an increase in difficulty and rewards
        Complete eight achievements for an even greater challenge
      
    

Empty Clip

Empty Clip is a top-down shooter action RPG.

Role Playing