GPC-Slots 2 is a text-based casino game. Its
features include five slot machines, a progressive
jackpot added to by all machines, two roulette
games, two dice games, and the ability to print
status out to HTML.
Droll is a Ruby library providing dice roller functionality, with a command line utility and an IRC bot as included user interfaces. It was created with roleplaying gamers in mind, with a range of sophisticated capabilities for such users.