Unfortunately for uConsole/DevTerm and other ARM Linux users. If someone puts out binaries “for Linux” they mean PC/x86 and not ARM. A tiny percentage of games on itch.io release games that will work on ARM, they usually label the releases as for Raspberry Pi. Most (all?) of these will work on all the ARM modules available for the uConsole, but not on the RISC-V module.
Computers used to be really complicated until PCs and Windows took over and dominated the industry. Some of us are old enough to remember that home computers were not very compatible with each other.
I hope you find it useful. But in a way you did. There are open source and freeware games outside of itch.io that will work (for example Beneath A Steel Sky). And there are lots of tools and utilities that just work out of the box on any Linux architecture. Stuff like graphing calculators, synthesizers, MIDI sequencers, editors, compilers, publishing and writing tools, lots of miscellaneous stuff.
Welcome to Linux. It sounds like you’ve jumped in with both feet. I’m both sorry and excited for you!
A lot of things in Linux are hard to do through the GUI, so any guides or things you find will likely have you put some commands into the command line. It’s conceptually the same as it is on Windows/DOS but the syntax is slightly different.
If you get stuck. Search for stuff, use multiple search engines if you have to. Google tends to find Linux stuff a little better than Duckduckgo. Go for the search results that are on Reddit or Stackoverflow for somewhat reliable advice. Sometimes you can find some dedicated nerd who has a blog full of Linux tips, those are usually a gold mine for other information and good to bookmark.
Linux has lots of log files and most commands will print their errors to the terminal. If you launch a command from the GUI there is no terminal, so the error messages are just thrown away(!!!).
Running programs from the command-line will usually spit out lots of messages, so if something is failing that is a good first step. See what errors it prints out. Cut and paste those and search for them, or share those messages on forums when you seek help.
uConsole seems like an experiment. I’ve had fun with mine. But uConsole is more about making it into your own experience than being a fully polished product.