Crossfire is a multi-player graphical arcade and adventure game made for X. It has certain flavours from other games, especially Gauntlet and the rogue-like games (Nethack, Moria, Angband, and Ragnarok). Any number of players can move around in their own window, finding and using items and battling monsters. They can choose to cooperate or compete in the same world.
Deliantra is an advancement of the crossfire multi-user RPG game. Unlike the original project, it focuses mainly on stability and playability, but also adds modern technology such as map scripting, Perl server extensions, asynchronous I/O, higher resolution graphics, and better client support.
Deliantra is a client for Deliantra game servers. It offers an intuitive user interface for exploring the vast game world, a persistent minimap, powerful macros and keymaps, dialog-based NPC interaction, and easy configuration for the skill, spell, and item system. It is based on Perl, SDL, and OpenGL for high performance on modern systems, and works on both Unix and Windows. Ports to other platforms should be very easy and are underway.
KildClient is a MUD client written with the GTK+ windowing toolkit. It supports many common features of other clients, such as triggers, gags, aliases, macros, timers, and much more. But its main feature is the built-in Perl interpreter. At any moment, the user can execute Perl statements and functions to do things much more powerful than simply sending text the the MUD. Perl statements can also be run, for example, as the action of a trigger, allowing you to do complex things.
GEAS (Group Editing and Authoring System) provides a Web portal for a group of people to work on a set of documents together. It is optimized for RPG communication (campaign background, between-session summaries and details, online gaming) but is useful for any group that needs to manage an evolving collection of shared documents. It supports multiple forums (i.e. campaigns) managed by moderators (i.e. GMs) with a flexible yet intuitive privileges model that enables users (i.e. players) to safely view, add, and edit content. It is based on a MySQL and Perl backend.
u6edit is a world editor for Ultima 6. With u6edit, you can create, modify, and delete objects; manipulate containers, via a tree view; edit terrain in place; view all map and object tiles; view tile and palette animation; view book contents; save map and object data; and play your new worlds with Ultima 6. It is a GTK application written in Perl.