Here's a free "Game Jam" License to DragonRuby Game Toolkit. 

This zip file includes a sample app/starting point specifically for this jam (64x64 resolution).

Browser based LOWREZ GTK environment.

A full rundown of GTK is here. 

Ping me on this thread, on the LOWREZ Discord, or DM amirrajan#2240 if you hit any snags.

Edit: 

I've created the DragonRiders Discord for anyone in the jam that is using DragonRuby GTK. 

Super Easy Setup Guide:

1. Unzip file.
2. Go to the directory that represents your operating system.
3. Run dragonruby.exe.
4. Open mygame/app/main.rb in the code editor of your choosing. A LOWREZ starter game will load up.
5. Change the code.
6. Save the file.
7. Watch the game change.

How to Publish Your Game:

1. Done coding your game? Cool!
2. Fill out mygame/metadata/metadata.txt.
3. Double click dragonruby-publish.exe.
4. A folder will appear called "build" that includes Windows, Mac, Linux, and Web versions of your game.
5. Upload to Itch.

looks like a cool engine, i wont use it for this jam but will def look for it when i dont have a predetermined engine 

I've made updates to the zip file. Added a low resolution font (still working on finalizing it), and I've added the capability to show and hide gridlines.

Here it is in action:

I've added another sample app:

This is terrifying and awesome all at the same time: https://gist.github.com/scorp200/b7828c5e38ffb0d5fcad72e63ecf7dc0

A new update to the zip file has been pushed as of 8/2/2019. This is a summary of what was changed: https://dragonruby.itch.io/dragonruby-gtk/devlog/92995/new-build-832019

LOWREZ button clicking sample: https://gist.github.com/amirrajan/8eaa0a3a606963f418dadde280d72c8d

PSA: After the game jam ends, the dedicated LOWREZ GTK server will be offline. If you want to  join the permanent GTK server, go to: discord.dragonruby.org.

Here is an example of how to export live documentation:

https://gist.github.com/amirrajan/d2206cd820adeba44ce384e549b69b18

This isn't LOWREZ, but you may find it useful if you're creating a roguelike: https://gist.github.com/amirrajan/30be700d54d05e102f14653d7871bfa8

This is @amirrajan's game. Source code is included with the download: https://amirrajan.itch.io/serenity