Realm of the Mad God - Realm of the Mad God is a best online hack and slash video game that includes pixel style graphics.
Terraria - Dig, Fight, Build! The very world is at your fingertips as you fight for survival, fortune, and glory.
Runescape - RuneScape is 3D Action-Adventure, Massively Multiplayer Online, Role-playing, Fantasy-based and browser-based video game developed and published by Jagex.
Minecraft - A block-building game that allows you to create and explore entire worlds from scratch.
LaTale - LaTale draws heavily from some other 2D side scrolling video games to provide a great fantasy MMORPG world.
Roblox - Reimagining the way people come together.