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.
Lycanobot is an IRC bot used to play the game, "The Werewolves of Thiercelieux" (Les Loups-Garous de Thiercelieux), which is quite like Mafia, the traditional Russian party game. It aims to do everything a game master has to, including distributing cards, asking things in private, announcing kills, etc.
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.
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.
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.
Nethack Records is an on-demand statistics generator for Nethack that is meant to be run on a Web server. It has several types of statistics, ranging from character info to daily and weekly stats. It is implemented with a modern template system, and is very customizable. One can sort by most field-types, such as character class or gender. The code is separated from the XHTML by means of HTML::Template. CSS is utilized to its fullest extent, allowing you to make it look however you like, without knowing Perl.