The House of Lunduke BBS is a 20 line, telnet accessible, retro BBS with a focus on old-school BBS Door games (Legend of the Red Dragon, LORD 2, TradeWars 2002, The Pit, etc.).
Totally free to sign up and use. Everyone gets 30 minutes of On-Line time for free. Supporters of The Lunduke Journal at Lunduke.Locals.com get unlimited time (they can be On-Line for 24 hours at a time if they want).