This is thread dedicated to worship of our Tech Tree ;^) No other games even modded ones have that many techs and that big tech tree. 13 eras. 942 techs spread over 160 columns. And this game isn't even fully developed! We could have end up with nice 1000 techs Era - Era Column Start - Amount of columns and techs - Techs/Column Prehistoric - x = 1, 18 columns and 98 techs. That is 5.44 techs per column. Ancient - x = 19, 13 columns and 93 techs. That is 7.15 techs per column. Classical - x = 32, 9 columns and 60 techs. That is 6.67 techs per column. Medieval - x = 41, 9 columns and 54 techs. That is 6.00 techs per column. Renaissance - x = 50, 11 columns and 59 techs. That is 5.36 techs per column. Industrial - x = 61, 10 columns and 67 techs. That is 6.70 techs per column. Atomic - x = 71, 15 columns and 102 techs. That is 6.80 techs per column. Information - x = 86, 13 columns and 79 techs. That is 6.08 techs per column. Nanotech - x = 99, 11 columns and 85 techs. That is 7.72 techs per column. Transhuman - x = 110, 13 columns and 76 techs. That is 5.85 techs per column. Galactic - x = 123, 14 columns and 65 techs. That is 4.64 techs per column. Cosmic - x = 137, 11 columns and 51 techs. That is 4.64 techs per column. Transcendent - x = 148, 12 columns and 52 techs. That is 4.33 techs per column. Future - x = 160, 1 columns and 1 tech. That is 1 tech per column. You can have up to 10 techs per column. Average for whole tech tree not counting Future Era is 5.89 techs per column. Spoiler Tech tree as of SVN 11094 : Prehistoric 200 000 BC - 12 000 BC Sticks, Stones and Words Ancient 12 000 BC - 1200 BC Wisdom of the Ancients Classical 1200 BC - 450 AD Veni, Vidi, Vici Medieval 450 AD - 1400 AD Kings and Castles Renaissance 1400 AD - 1750 AD Legacy of Da Vinci Industrial 1750 AD - 1900 AD Viva la Industrial Revolution Atomic 1900 AD - 1990 AD Nuclear Option Information 1990 AD - 2050 AD The Dankest Timeline Nanotech 2050 AD - 2150 AD Pepper Space Program Transhuman 2150 AD - 2300 AD Faster, Stronger, Better Galactic 2300 AD - 3000 AD Interstellar Voyage Cosmic 3000 AD - 4000 AD Final Frontier Transcendent 4000 AD - 6000 AD Tales of Infinity and Eternity 941 tech buttons - some religious techs are in modules, and there are 5 special purpose techs. There is 11 Punks, 29 Religions and 2 Special techs scattered across tech tree. Spoiler : Prehistoric - 3 R and 1 P -> 4 absolutely non mandatory. Druidic Traditions, Shamanism, Tengriism Megafauna Domestication Ancient - 10 R -> 10 absolutely non mandatory. Mesopotamism, Yoruba, Shinto, Ngaiism, Andeaism, Zoroastrianism, Judaism, Hinduism, Canaaism, Kementism Classical - 8 R, 1 S -> 9 absolutely non mandatory. Rodnovera, Asatru, Buddhism, Hellenism, Naghualism, Confucianism, Taoism, Jainism Waterproof Concrete - requires building. Medieval - 3 R, 1 P -> 4 absolutely non mandatory. Christianity, Islam, Voodoo Clockpunk Renaissance - 1 R, 1 S -> 2 absolutely non mandatory. Sikhism Lead Glass - requires building. Industrial - 2 R and 1 P -> 3 absolutely non mandatory. Baha'i, Mormon Steampunk Atomic - 2 R and 2 P -> 4 absolutely non mandatory. CaoDai, Scientology Dieselpunk, Atompunk Information - 0 P -> 0 absolutely non mandatory. Memes aside this era is bit boring Nanotech - 2 P -> 2 absolutely non mandatory. Biopunk, Nanopunk Transhuman - 2 P -> 2 absolutely non mandatory. Crystalpunk, Cyberpunk Galactic - 1 P -> 1 absolutely non mandatory. Spacepunk Cosmic - 1 P -> 1 absolutely non mandatory. Starpunk Transcendent - Nothing. Or everythingpunk? Eras with most to least techs (adjusted for dead end techs): Atomic - 102 (98) techs. Prehistoric - 98 (94) techs. Ancient - 93 (83) techs. Nanotech - 85 (83) techs. Information - 79 (79) techs. Transhuman - 76 (74) techs. Industrial - 67 (64) techs. Galactic - 65 (64) techs. Classical - 60 (51) techs. Renaissance - 59 (57) techs. Medieval - 54 (50) techs. Transcendent - 52 (52) techs. Cosmic - 51 (50) techs. Fun fact: Vast majority of techs will be researched two eras later. There is plenty of techs, that can wait one era though. Excluding religions, punks, and few other techs (Megafauna Domestication, Waterproof Concrete and Lead Glass) all techs will be eventually researched. Techs, that won't be researched (if you don't choose them), if you reach X lifestyle (only listing techs with at least two eras of space): Spoiler : Classical Lifestyle: Prehistoric - Feline/Elephant/Camelid Domestication, Animal Riding. Medieval Lifestyle: Prehistoric - Feline/Elephant/Camelid Domestication, Animal Riding. Ancient - Mummification, Soap/Candle Making, Veterinary Medicine. Renaissance Lifestyle: Prehistoric - Camelid Domestication. Ancient - Mummification. Classical - Mounted Archery. Industrial Lifestyle: Ancient - Mummification. Medieval - Fire Brigades, Crop Rotation, Commercial Whaling. Atomic Lifestyle: Renaissance - Oil Painting, Free Artistry, Mine Warfare, Hot Air Balloon. Information Lifestyle Industrial - Meteorology Those lifestyle techs below have OR requirements. None to all of those techs might be researched by selecting one OR prereq (in bracket OR prereq, that doesn't require this tech down in tech tree). Nanotech Lifestyle <Genesis Biology OR Graphene Alloys OR Disaster Robots>: Atomic - Radioastronomy (1, 3), Lunar Exploration (1, 3), Astrobiology (1, 3), Astrogeology (1, 3). Transhuman Lifestyle <Cloaking OR Personal Robots OR Lunar Trade OR Supercharged Crystallography OR Designer Microbiology OR Hypothetical Biochemistry>: No tech left behind for two eras. Galactic Lifestyle:<Nuclear Pulse Propulsion OR Nanotroids>: No tech left behind for two eras. Cosmic Lifestyle: <Neutrino Communications OR Folding Space>: No tech left behind for two eras. Transcendent Lifestyle: <Mensiokinesis OR Fantasy Materials OR Grand Unification Biology OR Stable Time Loops OR Cosmic Engineering or Tachyon Communication>: No tech left behind for two eras.