Xpra is known as "screen for X" : its seamless mode allows you to run X11 programs, usually on a remote host, direct their display to your local machine, and then to disconnect from these programs and reconnect from the same or another machine(s), without losing any state. Effectively giving you remote access to individual graphical applications. It can also be used to access existing desktop sessions and start remote desktop sessions.
Xpra is open-source (GPLv2+) with clients available for many supported platforms and the server includes a built-in HTML5 client. Xpra is usable over a wide variety of network protocols and does its best to adapt to any network conditions.
Xpra forwards and synchronizes many extra desktop features which allows remote applications to integrate transparently into the client's desktop environment: audio input and output, printers, clipboard, system trays, notifications, webcams, etc. It can also open documents and URLs remotely, display high bit depth content, and it will try honour the display's DPI.
Zellij is a terminal workspace. It has the base functionality of a terminal multiplexer (similar to tmux or screen) but includes many built-in features that would allow users to extend it and create their own personalized environment. Like other multiplexers, Zellij allows users to split their terminal into different panels and tabs. Zellij includes a layout engine, allowing users to define a map of panes in a configuration file and load it when they start the app. This way, one can have one’s panes laid out just the way one wants them without having to do all the setup work. Supports plugins written in any compiled language.
A group of dedicated gamers record some of their sessions of play and publish them as podcasts for the rest of us to listen to. If you're not sure if you'll like a game, or if you think you're not running something correctly, see if they've run a session or two of your game and see how they did it.