
Modifications may also be made to the Tales of Maj'Eyal game module through an add-on system, including graphics, interface, content and gameplay balance alterations and additions.

Ashes of Urh'Rok was released on 27 October 2014, Embers of Rage on 23 February 2016, and Forbidden Cults on. The T-Engine has been used to create games for the annual Seven Day Roguelike Challenge in 20. It supports many OpenGL features such as particle effects and shaders. The T-Engine game engine is written in C, and offers a development framework for grid-based game modules written in Lua. Development of ToME 4 started in 2009, and the first formal release occurred in 2012. It is based upon Casalini's earlier game Tales of Middle Earth ( ToME) which in turn is based upon his own PernAngband variant, itself based on Zangband, which in turn was based on Angband. Tales of Maj'Eyal was developed by Nicolas Casalini ("DarkGod"), with graphics by Assen Kanev ("Rexorcorum") and Raymond Gaustadnes ("Shockbolt"). In addition, the game server offers an online chat system, letting players talk to each other. It also collates game statistics including the top killers of players, most common race/class choices, and number of wins. Players may register with an optional online game server, which allows them to view their characters, achievements and high scores. The plot is non-linear, and success depends as much on character planning and storyline choices as it does on the player's skill in defeating enemies in combat. The player explores the lore-filled world of Eyal, which contains numerous dungeons and adversaries. Not all character choices are available at first some must be unlocked through in-game progress, or through monetary donation or purchase. Play begins with the player selecting one of nine races and one of 25 classes (expandable with add-ons). Gameplay depends heavily on the player's decisions and ability to develop and execute strategy. Tales of Maj'Eyal emphasizes tactical turn-based combat and flexible player-controlled character development. In a departure from many older roguelike games, Tales of Maj'Eyal has full-color graphics, can be played almost exclusively with the mouse, and despite permadeath the player can earn extra lives through various ways and by leveling up.

Tales of Maj'Eyal is a dungeon crawl featuring a customizable graphical interface that integrates classic roguelike keyboard commands with a mouse-driven interface.
