Some games can output video to the framebuffer, allowing you to launch and play them from the tty, without any display server running. This usually requires some tinkering to get to work because /dev/input devices are set to 660 root:input, so you can't access them directly without being in the input group. You shouldn't add yourself to the input group though, that's a bad idea. What I do is this:
[code]
$ sudo chown :input /usr/bin/game
$ sudo chmod g+s /usr/bin/game
[/code]
Now the game executable will be launched as if you were in the input group even though you're not. If the game is libre, then giving it unrestricted access to your input shouldn't be an issue.
Games I know to work like this are:
>openttd
>widelands (requires SDL_VIDEODRIVER=fbcon)
>retroarch (I know the games themselves aren't libre, but the emulator is and that's what counts)

Feel free to add to the list if you know of any more.

This was in a recent freegamer article:
https://github.com/etodd/yearning

My only point of contention is the Linux instructions...
>The Wwise authoring tool doesn't run on Linux. Use Wwise on another platform to build the Linux soundbanks.
Going to try and run this in wine to get it compiled. Kind of annoying though, very vague instruction.

Valyria Tear is a JRPG. It's well rounded game and its' clear lots of development work went into it. It kind of reminds of an old FF game and I recommend it, if you are into that sort of things. Graphics and movement are a little basic, but at the very least it's an enjoyable waste of time.

https://github.com/ValyriaTear/ValyriaTear

Massive AI improvements in 0.9.2 bring full support to the new soccer mode!

Anyone played it yet?

Hey, /lv/-fag, have you ever wanted to play Space Station 13?
I wanted to, but it runs on proprietary (and laggy, according to players) BYOND game engine.

What you think about this project?
https://github.com/griefly/griefly

As you can see it has some interesting mechanic which they call "Molecular Voxel Interaction Engine". As seen in the trailer above, it basically allows you to automate crafting, resulting in interesting "programmable" factory setups.
Of course this might sound a bit too much like actual work and not fun... but given the big fan scene for the closed source game Factorio, I would say it can be more fun that it looks at first ;)

Blackvoxel itself probably needs to be a bit more of a game instead of "just" a sandbox, but there is big promise in the overall concept, so give it a try :)

http://freegamer.blogspot.co.uk/2016/05/blackvoxel-ambitious-early.html

Hey guys, I want a libre game as my wallpaper. Probably a screenshot, mostly blue. Maybe some faggot pixel art.

What would be the best game for that?