I was holding off to see if anyone would warn me against posting actual connection info but no one has. MUDs use the telnet protocol. This means there are multiple ways to connect. If you are familiar with telnet you can connect to dunemud.net port 6789. Alternatively, you can use a client designed specifically for muds. Zmud can be found here. http://zuggsoft.com/index.php. Mushclient can be found here.... Source: about 3 years ago

On a quick search I found Quest, but I remember there being more, some even had their own subreddits. Maybe I can look them up later. Source: 11 months ago

Other software that I haven't tried: quest, inklewriter, gamebook authoring tool. Source: about 1 year ago

Surprised no one has mentioned Quest, it's complicated to figure out but it should be able to do everything you're asking, based on what I've seen other people do with it. Source: about 1 year ago

It was just a text adventure in my case, but it had sounds and images playing when different choices were picked. It was about a hunt for a werewolf in the forests, just used as a test but I still recall it. It was a bit of a time ago, using it to learn pc and trying to make games out of fun, but I greatly recommend the program I used https://textadventures.co.uk/quest it is called Quest. Source: about 1 year ago

Another option is called Quest (https://textadventures.co.uk/quest) which is a tool that allows you to create text-based games using a simple visual editor. Quest games are similar to the classic Zork-style games. It allows you to create rooms, characters, and other game elements using a visual editor, and then link them together to create your story. Quest games can be played in a web browser, and also can be... Source: over 1 year ago