Example of a BBS home screen  - image 6813cd84 2b14 4a81 8858 d3d98ce7a8a7 - Running BBS Door Games on Windows 10 with GameSrv, DOSBox, plus telnet fun with WSLI continue to enjoy seeing what can be done with WSL (Windows Subsystem for Linux) but even more fun is combining CMD.exe (the Windows console), Ubuntu on Windows (WSL), and DOSBox (an x86 emulator that lets you run OLD programs in original DOS that no longer run natively on Windows). What kind of cool stuff can I do today?

I did a lightning talk this week at NDC London where I started with a text file that included a CR/LF, Git autocrlf, then talked about typewriters, what a Carriage really is, then the Teletype Model 33, the Altair 8800, the ASCII chart, then ANSI art, and finally moved on to BBS’s and BBS . I’ll do a more extensive post later and I’m going to turn this into a full conference talk, but for the demo I ran a few BBS Door Games under Windows . Why? Because it’s awesome and history is lovely.

You can try setting up what I’m going to describe in this post, or you can try telnet’ing to a BBS like the CaveBBS here: telnet:// You might also want to telnet:// for ASCII-based Star Wars! Originally we would call (like literally dial-up one to one) a BBS but ubiquitous added telnet as a nice option that persists today. Door Games were ASCII/ANSI games that the BBS would shell out to, passing the connection over. When the game extended, the BBS picked up the phone and kept the connection. TradeWars is/was the most well-known Door Game and we’d play it for months. TradeWars was the Elite Dangerous of the BBS set. 😉

So the question is, could we play DOS-based 16-bit Door Games today? Yes.

GameSrv can be used to bring your old DOS based BBS server into the new millennium. It’ll act as a front-end and accept telnet connections before passing them off to the DOS BBS software.

Rick Parrish has a BBS door game server for Windows and Linux that he’s written in open source C# called GameSrv. You may know Rick from his fTelnet browser based app. fTelnet lets you connect to Bulletin Board Systems from the comfort of your browser. A locally-run cross-platform option for connecting to BBS’s is SyncTERM.

Go get SyncTerm, Rick’s GameSrv Full, as well as DOSBox 0.73. You’ll be able to telnet into your BBS with Ubuntu’s (Bash on Windows/WSL) built in Telnet but you may run into issues with local echo (you’ll want to Ctrl-] then type “mode char”) as well as some missing extended ASCII characters that BBS’s loved to draw menus with. While WSL’s ANSI support is good, these missing characters cause hiccups. SyncTerm is totally custom with a whole host of Bitmapped fonts and a lot of custom work around extended control sequences. You should also try out EtherTerm, Qodem and NetRunner as other cool BBS-friendly terminal options.

NOTE: One of the challenges of the conhost (console host – the thing that paints the console window and hosts and paints text and handles keyboard input for bash/cmd/powershell) is that while there’s lots of great console fonts, those fonts don’t often include some of the obscure extended ASCII DOS characters that BBS’s used to draw their menus. In order to find and render those glyphs, consoles will use “font fallback” and follow a tree of fonts, looking for the best glyph. As I understand it (I could be wrong) the current conhost – lovely as it is – doesn’t yet support this. I think it should in order to be a complete and effective solution for telnet/ssh/etc.

Run GameSrvConsole and it will listen on localhost by default. You could setup a VM in Azure and run it there to make your BBS and Door Games available to the public if you’d like! Then, either “telnet localhost” or run “syncterm localhost” to access your BBS. You can “ALT-ENTER” to put Sync Term full screen, which is awesome.

Your new BBS  - image a17ff4e9 af6c 4215 a0ff 326d974ba609 - Running BBS Door Games on Windows 10 with GameSrv, DOSBox, plus telnet fun with WSL

Once you sign up for your BBS with a new account, you can try out the Door Games menu. Selecting a Door Game will cause GameSrc to launch and run the Door, while brokering the output back to your telnet client.

Running a Door Game - Ambroshia Test of Time  - image 4e219d63 12b5 4479 921e 51af17feb02b - Running BBS Door Games on Windows 10 with GameSrv, DOSBox, plus telnet fun with WSL

I’m heartened to see 20 year old BBS Door Games come to live on Windows 10. I’m going to see if my 10 and 12 year olds get a kick out of some of these adventure games.

An adventure door game  - image be6ae548 dd91 476c bf00 2df811e933dd - Running BBS Door Games on Windows 10 with GameSrv, DOSBox, plus telnet fun with WSL

Finally, and slightly related, try “curl” in a large WSL (Linux) console. Lovely. I love stuff like this. Perhaps I’m easily impressed, or I just miss ASCII art.

image  - image 9389fdc0 65b1 4666 acd4 9e76ed5ebadf - Running BBS Door Games on Windows 10 with GameSrv, DOSBox, plus telnet fun with WSL

Head over to and STAR his GitHub Repository and if you like GameSrv and appreciate the work involved, you can donate to Rick as well. I have!

Sponsor: Get the latest JetBrains Rider for debugging third-party .NET code, Smart Step Into, more debugger improvements, C# Interactive, new project wizard, and formatting code in columns.

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