Let's start with the best.

http://www.wesnoth.org

Zdoom/Gzdoom mod compliant GPL engine:
https://github.com/nashmuhandes/GZDoom-GPL

1:1 improved asset replacement, mod compliant:
https://freedoom.github.io/

pol.wad:
http://www.wad-archive.com/wad/2781793ecb5b60b0dc40ba37c1572c05

Engine for original dooms, heretic, hexen and strife:
https://sourceforge.net/projects/vavoom/

>OpenTTD
https://www.openttd.org/en/
A remake of Transport Tycoon Deluxe. Lets you build enormous labyrinthine rail networks. Can be addictive.

Simutrans:
http://www.simutrans.com/

>>34
Quakepasta:
http://pastebin.com/cpjZmazY
EZquake:
http://www.quakeworld.nu/

Doom3: BFG edition needs to be installed in wine to extract the "base" folder.
https://github.com/RobertBeckebans/RBDOOM-3-BFG
http://www.moddb.com/mods/doom-3-bfg-ultimate/downloads
Extract the "@UltimateHD" folder and place it next to your "base" folder.
Use: "rbdoom3bfg +set fs_resourceLoadPriority 0 +set fs_game @UltimateHD +set r_lightscale 1 +set r_overbright 1 +set g_fov 100" to launch the game.

Linux Tycoon:
http://lunduke.com/linux-tycoon/

Infamous kraut pedo game:
http://unteralterbach.net/index.en.html

FreeCiv - explicit:
http://freeciv.wikia.com/wiki/Main_Page

Scorced3d - Pretty nice (looks like Worms in 3D):
http://scorched3d.co.uk/

Visual novel with tactical elements. You are a captain of a space ship and your crew is full of qts:
http://sunrider-vn.com/sunriderpage/
https://github.com/vaendryl/Sunrider

Obligatory tux racer:
http://extremetuxracer.sourceforge.net/

Open Red Alert:
http://www.openra.net/

0AD:
http://play0ad.com/

Unvanquished tactical FPS:
https://www.unvanquished.net/

Annex RTS:
http://annexconquer.com/

Tales of Maj'Eyal:
http://te4.org/

Aquaria:
http://www.bit-blot.com/aquaria/

Gish:
http://www.chroniclogic.com/gish.htm

Lugaru:
http://www.wolfire.com/lugaru

Mr. Rescue:
http://tangramgames.dk/games/mrrescue/

Tesseract:
http://tesseract.gg/

Wolfenstein: Enemy Territory:
http://etlegacy.com/

Performous, rockstar clone:
http://performous.org/

UFO:Alien Invasion:
http://ufoai.org

Space sims:
http://pioneerspacesim.net/
http://vegastrike.sourceforge.net/

Simcity clone:
https://code.google.com/p/lincity-ng/

Corebreach:
http://corebreach.corecode.at/CoreBreach/CoreBreach.html

Astro Menace:
http://sourceforge.net/projects/openastromenace/

Arx Liberatis:
http://arx-libertatis.org/

Syobon Action:
http://opensyobon.sourceforge.net/

The Dark Mod: avoid (((updater)))
http://www.thedarkmod.com/main/

HomeWorld - visual fap novel:
http://homeward.renai.us/

Cyber FPS:
http://www.terminal-overload.org/

Frogatto, side scroller:
http://www.frogatto.com/

Pingus, Lemmings clone:
http://pingus.seul.org/welcome.html

Frozen Bubble, puzzle bobble clone:
http://frozen-bubble.org/

Hedge Wars, roms clone:
http://hedgewars.org/

ABA action games:
http://sourceforge.net/projects/tumiki/
http://sourceforge.net/projects/rrootage/
http://sourceforge.net/projects/ttrooper/

Unknown Horizons, RTS city builder:
http://www.unknown-horizons.org/

Dungeon Keeper clone:
http://opendungeons.sourceforge.net/

Steel Storm:
http://one.steel-storm.com/

Mario clone:
http://supertux.lethargik.org/

Settlers 2 clone:
https://wl.widelands.org/

Mario Kart clone:
http://supertuxkart.sourceforge.net/

Flight sim:
http://www.flightgear.org/

Tank FPS:
http://bzflag.org/

Space sim:
http://www.oolite.org/

Urban Terror - fps:
http://www.urbanterror.info/home/

Spring RTS engine:
https://springrts.com/

Aleph One - Marathon series clone:
http://marathon.sourceforge.net/

8bit 2d multiplayer shmup:
http://www.bitfighter.org/

Roller coaster side scroller:
http://www.stuff-o-matic.com/asgp/

Gang Garrison 2 - 2d "team fortress 2":
http://www.ganggarrison.com/

Liero clone - 2d shmup:
http://www.openlierox.net/

Neverball - action puzzle game:
http://neverball.org/

Smash battle - mario based 2d shmup:
http://sourceforge.net/projects/smashbattle/

OpenJK - Jedi Knights games:
https://github.com/JACoders/OpenJK

Open Clonk - multiplayer action side scoller:
http://www.openclonk.org/

World of Padman - childish fps:
http://worldofpadman.net/website/

2d shmup:
https://www.teeworlds.com/

2d platformer puzzle:
http://www.oletus.fi/static/whichwayisup/

2d platformer puzzle:
http://meandmyshadow.sourceforge.net/

Top down shmup:
http://www.bloodmasters.com/

Project: Starfighter:
http://starfighter.nongnu.org/

Infiniminer clone:
http://www.minetest.net/download

Syndicate clone:
http://freesynd.sourceforge.net/

Scumm engine clone:
http://scummvm.org/

Armegetron Advanced:
http://armagetronad.org/

The Ur-Quan Masters, now available in most distro repos:
http://sc2.sourceforge.net/

Nethack - roguelike game:
http://www.nethack.org/common/index.html
https://nethackwiki.com/wiki/Graphical_user_interface
>Here are some more libre roguelikes:
http://www.roguebasin.com/index.php?title=Category:Open_source

Freeablo:
http://freeablo.org/

Endless Sky - GPL Escape Velocity clone:
https://endless-sky.github.io/

OpenRCT2 - RCT2 engine replacement:
https://github.com/IntelOrca/OpenRCT2



Falltergeist is a free software remake of Fallout 2's engine:
https://github.com/falltergeist/falltergeist

OpenMW - Libre Morrowind engine with open construction set:
http://openmw.org/

Linwarrior:
http://www.hackcraft.de/games/linwarrior_3d/index.htm

Coldest:
http://www.coldestgame.com/site/

Angband
http://rephial.org/

I just want to thank the previous posters, great work!

Roguelike:
http://keeperrl.com/

Fast paced puzzle:
https://github.com/faissaloo/xor

Mod compliant keen engine:
https://github.com/sulix/omnispeak

3rd person arcade style racing:
http://www.ya2.it/yorg/

Bomberman clone:
https://github.com/Javanaise/mrboom-libretro

Racing game
http://stuntrally.tuxfamily.org/

Postal1
https://bitbucket.org/gopostal/postal-1-open-source/src

Destination Sol
https://github.com/MovingBlocks/DestinationSol

Blackvoxel
http://www.blackvoxel.com/

Valyria Tear
https://github.com/ValyriaTear/ValyriaTear

Hexoshi - metroid clone
https://github.com/ValyriaTear/ValyriaTear

Abuse 20th anniversary edition (2016)
https://github.com/antrad/Abuse_1996

Hungarian RTS
https://github.com/akarnokd/open-ig

Star Trek Voyager FPS
https://mega.nz/#!NSgjRQQS!ca0L4yw4nW3T8xox4Y3pkTQgCtabDuM1o781-Yg_J38

Bomberman clone
https://github.com/Javanaise/mrboom-libretro

Yorg racing
http://www.ya2.it/yorg/

Awesome space sim:
https://endless-sky.github.io/

>>40792
FTE dev was mad
https://rbt.asia/g/thread/80439845/#

<eukara> really getting desperate using a russian proxy, why even bother posting when nobody wants to hear what you have to say?
> you end up banned. every. single. time.
> I've never been banned
> anyway I did what you couldn't or wouldn't
> 4 million ents in DP
> you're fucked in the head, right?
> suck on it faggot dick chopping-supporter
> nope
> clearly
> I'm a licensed attorney.
> what are you?
> prove it
> you're making a lot of assumptions about others being inferior to you, when you do not know them and you're clearly an egolomaniac
> but you could never exercise power over another adult, that's why you target kids
> you disgusting prick
> you're just as simple to figure out as any other insane person.
> and clearly you're not a good attorney, because why else have so much time on your hands modding Nexuiz of all things.
> like wow, no life confirmed!
> eukara: I'm not like you: I don't have to work.
> I just do my hobbies
> because you don't have work.
> you're a fake.
> you have accomplished nothing.
> 4 million entities says otherwise.
> not a single person knows or cares that you exist.
> and my marble floors say otherwise :)
> you don't put your real name out, people won't remember your alts.
> the purpose to do the thing is the thing itself.
> so 'doing your hobbies' 'not having to work' is worth bragging about, when it's clear you're not doing any goodwill



> no one cares about 4 million entities in Darkplaces. Nobody sane would ever need that many visible entities.
> that's unplayable over the network.
> but you don't care about that. in your little head you think you've figured it all out.
> and I'm wrong.
> funnily enough, you used my code from FTE to make this work. So no, you're a talentless, worthless hack.
> go away.
> Be a Narcissist in your own 4 walls.
> ill be with you in a moment
> ~eukara 46.23.94.114


<starsomething> ill be with you in a moment
> Glad your mad I used your algo :)
> pound that sand boy!
> it just proves you have no talent.
> you can even revoke the license to use it and sue me :)

>>94466
> and the consumer of the GPL software is given the publisher the promise of following the GPL
Wrong.
The "consumer" is trying to gain the limited permission granted in the GPL. He is not trying to "get" the software. He's trying to get permission that are written in the GPL.

For the limited permissions a License grants (which is what he is trying to get) (the copyright holder is NOT offering the copyright itself (copyright transfer)) usually a licensee will pay money.

YOU DO NOT HAVE AN INDEPENDENT PERMISSION TO "violate" THE LICENSE GRANT.
So you "following" the limits in the grant is not you GIVING anything.

Do you get that, faggot?
DO YOU GET THAT?

No you don't.

-----
Simply: you are trying to buy the permissions listed in the license memorandum.
For this you pay nothing.

You retort that if it weren't for you obeying the license grant; you could distribute, modify, and molest the software in any way you wish.
Which is untrue: Copyright Law grants you zero rights (all rights reserved). And you have a pre-existing duty to follow it.

-----
Simpler:
A little girl child has a flute.
Should you rape her? And take her flute?

Because you promise not to rape her and enslave her as a bride: you are entitled to that flute. Consideration has been paid.
According to you.

But is it so?

>>68557
how are you

>>62253
> AssaultCube
http://assault.cubers.net/
Easy to get into, in my opinion the closest you can get to a FPS+MOBAs while still making a good game.
Past its golden age apparently, some speedbots here and there.

> Xonotic
http://www.xonotic.org/
Fun as all hell with people, bots are good for getting a hang of it.
Mods expand on it with vehicles. Bring your friends.

> ChaosEsque Anthology
https://sourceforge.net/projects/chaosesqueanthology/
A fork of Xonotic.
Haven't actually played it, just putting it out there without the devs' pasta

> GLOOME
Completely free rendition of the GZDoom engine.
First project is Nocturne in Yellow, by the guy who made DemonSteele. Albeit with an underwhelming start, great gameplay and neat design ideas hooked me in full. png(s) related.
https://github.com/marrub--/GLOOME/

>>37436
Angband
http://rephial.org/

I just want to thank the previous posters, great work!