Peter As far as I know this has not been done before: Name (maximally 5) open source games you recommend (assets must be libre, too). I start: Battle for Wesnoth Super Tux Kart 0 A.D. Argentum Age TORCS (note there's a successor)
Modanung Peter One might argue STK's Beastie and Hexley are nonfree. heXon A-Mazing Urho Open Saucer Tux! LucKey Park It's only self-promotion because you didn't contribute yet.
Peter Modanung Yeah you're right about the unfree avatars (or however they are called). (And I won't contribute to your projects because it is beyond my coding skills to find out where the reasons for the missing include files are. I had already stripped down the build scripts but that's like tuning a car's tires while the engine is defect.) @ffaf You mentioned 6. But I will accept that because they all sound interesting. ;)
ffaf When I want to lure people in libregaming, I go with: Wesnoth, probably the most polished of the pack meritous (roguelite) L’Abbaye des Morts (platformer/adventure) Flare RPG (diabloish action) Minetest Supertux cart depending on what the person I am chatting likes.
Peter Modanung Oh nice, you weren't critizing me. :) Well, heXon worked but not the rest @ffaf L'Abbeye des Morts seems to be unfree. Is that correct?
ffaf @Peter seems this incarnation is free! VVVVV, which is a game I often replay, hasn’t yet free assets...
forty_sham (In no particular order.) Minetest Pingus Hedgewars SuperTux Endless Sky (Honorary mention: GL-117, a true classic.)
Technopeasant My favourite libre games are Freedoom, Avoision, Adventures on Planet Zephulor, Which Way Is Up, Pingus, Dave Gnukuem, Heroine Dusk, Trackballs, Me and My Shadow, XEvil, 0 A.D., Duckmaze, Orbit-Hopper and Xonotic.
poVoq Only libre assets makes it a bit harder. I tried to think of some less commonly mentioned ones aside from Veloren. Veloren Tanks of Freedom (also the new sequel) Block Attack Yorg Unciv
dulsi Mojotron Alchemy Quest (or Open Alchemist) Angband (without sound unfortunately) Smalltrek Cendric Inertia Blast
Modanung @dulsi Silent Angband or it doesn't count. ;) Cendric seems to have unfree assets as well. @Technopeasant That's not how you count to five! More like schfifty-five.
dulsi Modanung Sorry about that I didn't go back and check Cendric. Also didn't realize Angband sounds had a problem. Added Inertia Blast as a replacement for Cendric.
Technopeasant Modanung Fine, if you insist. 😛 Freedoom Adventures of Planet Zephulor Which Way Is Up Me and My Shadow Avoision
Modanung ...let me demonstrate once more: Powermanga Kobo Deluxe Frozen Bubble Crack Attack! Extreme Tux Racer EDIT: Frets of Fire needs a default free culture music pack. Licks of Liberty?
Peter Ok. Since there weren't any more answers for a while, let me summarize: If I list all games mentioned more than one time I get the following list: The Fab 5 of libre gaming: Minetest 0 A.D. Super Tux Kart (drawback: unfree assets) Battle for Wesnoth Pingus (In no particular order) Edit: I personally think Pingus isn't so popular.
forty_sham Peter I personally think Pingus isn't so popular. Actually, it was pretty high-ranking on Ubuntu Software Center for a period of time, and it still retains a 4-star rating.