Now there are 3 three-level branches, 2 two-level and 2 one-level:

Wooden machine construction (2M): raises the production of manufactures and war machines’ workshops by +10%.

Colonization (0,3M): decreases acres’ costs.

DracoAstronomy(2M)/DracoAnatomy(3M)/DracoDynamics(4M): increases the number of Dragons able to live in your Kingdom without SB Dragon Trap by 6/16/20 %, increases the chance of luring a Dragon through the Portal and their number found in the Labyrinth, increases the influence of Generals Dragon Killing and the effect of thievish attack Dragon slaying.

Weapon Sharpening(2M): decreases the cost Elite 2 units by -5 weapons, increases the amount of weapons gained from the Armourers workshop by +5%.

Weapon Repairing(4M): decreases the cost Elite 2 units by -15 weapons, increases the amount of weapons gained from the Armourers workshop by +15% (Necromancers cannot develop this branch).

Weapon Reforging (6M): decreases the cost Elite 2 units by -20 weapons and Elite 1 units by -5 weapons, increases the amount of weapons gained from the Armourers workshop by +20%(Necromancers, Br-Ougs and Gnomes cannot develop this branch).

Reclamation (3M): the second level for Colonization, decreases the cost of rebuilding Wastelands by -33%.

Occultism (cost = (6 - Lvl_in_Magic)*1M): gives an additional Spellbook. For level 0 (no levels developed) in Magic costs 6M Science Points; for level 5 (all levels developed) in Magic costs only 1M Science Points.

Calculating (2M): decreases the tax on the Market to 12% for food, stones and weapons.

Reckoning (4M): decreases the tax on the Market to 8% for food, stones and weapons.

Accountancy (6M): decreases the tax on the Market to 5% for food, stones and weapons.

Time Bend (0,3M): gives you an additional trippled turn limit (3*15 without Western and Eastern Towers of Time, 3*17 with those two SB, does work only on Kingdoms younger than 10 days).

Time Collapse (0,3M): gives you an additional turn limit (15 turns without Eastern and Western Towers of Time, 17 with both SB, can be developed at any time during the Age).

Empirics(5M): increases the chance of a breakthrough by +10%, increases breakthrough value by +10%.

All multi-level branches have 5 levels. To gain a new level you have to gather the needed amount of Science Points. You can invest SP in these fields of studies :

Development: raises the maximum number of Science Points produced per turn.

Architecture: lowers the cost of Special Buildings (except LJP).

Engineering: lowers the cost of Economical Buildings.

Magic: lowers the cost of casting spells.

Training: speeds up training of military units.

Recruitment: lowers the cost of recruiting thieves.

Humans - Empirics costs only 25% of the normal price.

Gnomes - Wooden machine construction costs only 25% of the normal price, Weapon reforging not available.

Elves - DracoAstronomy/DracoAnatomy/DracoDynamics 20% cheaper

Hobbits - Primitive Magic costs 1M, Calculating/Reckoning/Accountancy 20% cheaper.

Dwarves - Engineering and Architecture (all levels) 20% cheaper.

Genies - Primitive Training costs 1M.

Goblins - Development, Engineering and Architecture, Magic (all levels) 10% more expensive.

Necromants - Weapon repairing / Weapon reforging not available, Primitive Engineering costs 1M.

Br-Ougs - all 5th levels are 10% more expensive, Weapon reforging not available.

Giants - no Recruiting, Weapon sharpening / Weapon repairing / Weapon reforging 20% cheaper.