This is the AltSFX sound set for OpenTTD (currently version 12). It tries to give its different feel while maintaining a CC-BY license. At this moment it is complete. Feedback is appreciated (https://www.tt-forums.net/viewtopic.php?f=29&t=85650) . This sound set as a whole is under CC-BY 3.0 license. Samples from the following sounds were used: - "Fireworks Sound" by Stephan from soundbible.com - "public domain" used in 00.wav - "Disappointed_Crowd" by unchaz from freesound.org - CC-BY 3.0 used in 01.wav - "Digging1" by cameronmusic from freesound.org - CC-BY 3.0 used in 02.wav - "Industrial/Factory Fans" by IanStarGem from freesound.org - CC0 used in 03.wav - "steam train horn 01" by eliasheuninck from freesound.org - CC-BY 3.0 used in 04.wav - "steam1" by gadzooks from freesound.org - CC-BY 3.0 used in 05.wav - "Boat Horn" by Alexander from orangefreesounds.com - CC-BY 4.0 used in 06.wav and 07.wav - "takeoff1" by granizo from freesound.org - CC-BY 3.0 used in 08.wav - "Takeoff 1 (Distant)" by cliftonmcarlson from freesound.org - CC0 used in 09.wav - "rocky_mtns_train_horn_moving" by polymorpheva from freesound.org - CC0 used in 10.wav - "AMBLM air conditioner rumble loop" by LudwigMueller from freesound.org - CC0 used in 11.wav - "JacobsLadderLong2" by Halleck from freesound.org - CC-BY 3.0 used in 12.wav - "Air Steam Various short 01" by 2imitk from freesound.org - CC-BY 3.0 used in 13.wav - "Railroad Crossing Japan" by MrAuralization from freesound.org - CC-BY 3.0 used in 14.wav - "Car breaks down" by m1a2t3z4 from freesound.org - CC0 used in 15.wav - "Dumpster_Diving" by 1sticky8 from freesound.org - CC0 used in 16.wav - "crash" by sagetyrtle from freesound.org - CC0 used in 17.wav and 19.wav - "Explosion_17" by tcpp from freesound.org - CC-BY 3.0 used in 18.wav - "Till With Bell" by Benbocan from freesound.org - CC-BY 3.0 used in 20.wav - "door metal heavy push bar beep open close with security deadbolt unlock click2" by kyles from freesound.org - CC0 used in 21.wav - "jingle breaking news radio" by Thejack288 from freesound.org - CC0 used in 22.wav - "LAX Airport Landing Sound One" by FreeToUseSounds from freesound.org - CC-BY 3.0 used in 23.wav - "Helicopter Sound" by navaneetha kris from soundbible.com - CC-BY 3.0 used in 24.wav - "Truck engine" by Joseph SARDIN from bigsoundbank.com - CC0 / "public domain" used in 25.wav, 26.wav and 62.wav - "school bus truck horn honk 50m away" by kyles from freesound.org - CC0 used in 26.wav - "old_dodge_truck" by roscoetoon from freesound.org - CC-BY 3.0 used in 28.wav and 63.wav - "Approx 850 - Enthusiast Audience" by lonemonk from freesound.org - CC-BY 3.0 used in 29.wav - "Crowd Ooohs and Ahhhs in Excitement" by noah0189 from freesound.org - CC0 used in 30.wav - "in the smithy 2" by l0calh05t from freesound.org - CC-BY 3.0 used in 32.wav and 39.wav - "Jackhammer" by MrAuralization from freesound.org - CC-BY 3.0 used in 33.wav - "Air Horn Sound" by Mike Koenig from soundbible.com - CC-BY 3.0 used in 35.wav - "Bleat Sound" by Mike Koenig from soundbible.com - CC-BY 3.0 used in 36.wav - "Cow Mooing Sound" by Mike Koenig from soundbible.com - CC-BY 3.0 used in 37.wav - "Horse Whinny, Close, A" by InspectorJ from freesound.org - CC-BY 3.0 used in 38.wav - "Chainsaw cutting firewood" by VlatkoBlazek from freesound.org - CC-BY 3.0 used in 40.wav - "Sugar Pack" by sKydran from freesound.org - CC0 used in 41.wav - "Duck Toy Sounds" by sacha-rush from freesound.org - CC0 used in 42.wav - "Piston Loop" by sebastianlund from freesound.org - CC-BY 3.0 used in 43.wav - "Conveyor belt" by freemaster2 from freesound.org - CC-BY 3.0 used in 44.wav - "bubbles (1)" and "bubble (7)" by Glaneur de sons from freesound.org - CC-BY 3.0 used in 46.wav - "bubble (3)" by Glaneur de sons from freesound.org - CC-BY 3.0 used in 47.wav - "G39-15-Steam Catapult" by craigsmith from freesound.org - CC0 used in 48.wav - "Metal_03" by Q.K. from freesound.org - CC0 used in 48.wav - "bubbles (2)" and "bubble (2)" by Glaneur de sons from freesound.org - CC-BY 3.0 used in 49.wav - "Running Water" by harrybates01 from freesound.org - CC-BY 3.0 used in 51.wav - "wet catch" by ag_the_king from freesound.org - CC0 used in 51.wav - "wind_voice1" by thanvannispen from freesound.org - CC-BY 3.0 used in 52.wav - "Putting toy cars in a box" by SoundsForHim from freesound.org - CC0 used in 53.wav - "cutting_tree" by fkurz from freesound.org - CC0 used in 54.wav and 56.wav - "Jet Plane Flyby" by qubodup from freesound.org - CC0 used in 59.wav - "horn" by UncleSigmund from freesound.org - CC0 used in 62.wav and 63.wav - "20061105FurnaceFanAcceleration" by daveincamas from freesound.org - CC-BY 3.0 used in 65.wav - "Jungle, Tropical birds and insects" by mikevpme from freesound.org - CC0 used in 66.wav and 72.wav - "Lion Roar" by qubodup from freesound.org - CC-BY 3.0 used in 67.wav - "Monkey screaming" by Archeos from freesound.org - CC0 used in 68.wav - "train trip loud 1" by Yoyodaman234 from freesound.org - CC0 used in 71.wav - A sound made by the author (ALEXbr from tt-forums) - CC0 used in empty.wav