Miller's Quest! is a fire-and-forget RPG, or more accurately, an RPG simulator. You simply start the game and watch experience points roll in. In this respect, it is quite similar to the popular Progress Quest for Windows, though the feature sets are quite different. While it currently lacks network play, Miller's Quest features a more varied combat system and a comprehensive, simply editable data set.
Avadan is a role-playing game situated in space. The player travels from planet to planet in order to find the mystical oracles. The player is placed in nethack-style dungeons. The whole game is rogue-like, but with the extension of space travels. The dungeons are shown with tile graphics, and space looks a bit better. On space stations, the player can talk to NPCs, get quests, and trade artifacts found in the dungeons.
The Z-machine Preservation Project is a Java implementation of the Z-machine (Java version >= 5 is required) specification. This Z-code interpreter can be run either as a standalone application or as an applet within a Web browser. It runs Interactive Fiction created by Infocom as well as those compiled with Inform, and targets all existing story file versions. Features include saving the game state, multimedia support (graphics, sound effects, meta data), colored and styled text, undo, and timed input as well as support for different languages. Games in the Inform 7 release format are supported as well (Treaty of Babel specification).
roll is a command-line program that rolls a user-defined dice sequence and displays the result. The die are defined using dN, where N is the number of sides. They can be rolled multiple times by prepending the number of repetitions (e.g., 3d6) and used in simple mathematical expressions (e.g., 2d8+4).
GalaxyMage is a tactical/strategic RPG. A tactical RPG is a type of role-playing game where turn-based battles are fought on a 3D map. Examples of commercial tactical RPGs include Final Fantasy Tactics, Vandal Hearts, and Disgaea: Hour of Darkness. GalaxyMage is designed to be relatively simple to pick up and play without getting bogged down in the details of the battle mechanics. But it also allows for a lot of character development and customization.
GearHead is a mecha roguelike roleplaying game. Set a century and a half after nuclear war, you can explore a world where various factions compete to determine the future of the human race. Major features include random plot generation, a detailed character system, and over two hundred customizable mecha designs.