Technology trees

Technology trees are various routes to unlock additional blueprints while training Invention.

The technology tree mechanism relies on completing Invention tasks to earn currency for that specialisation. The currency is then used to unlock blueprints, which can then be discovered like other blueprints.

There are currently two technology trees:

• Cave goblin technology tree
• Dwarven technology tree

Technology trees can be unlocked at level 40 Invention. To begin unlocking the blueprints, one tree must be chosen to specialise in. This can be done by speaking to either one of the following NPCs:

• Drorkar beside the furnace in Keldagrim Palace, requiring completed The Giant Dwarf
• Oldak in his lab in Dorgesh-Kaan, requiring completed Death to the Dorgeshuun

The specialised tree earns 50% more currency from tasks. Switching technology tree costs 100 currency of the discipline currently specialised in.

The interface of dwarven technology.

Invention tasks

Main article: Invention tasks

The interface of dwarven tasks.

To unlock blueprints in cave goblin technology tree and dwarven technology tree, the player must complete tasks to gain Goblin Currency and Dwarven Currency respectively. These tasks involve handing in requested items or materials. A new task for each tree is received at 00:00 and 12:00 game time, and a maximum of five can be held at once in each tree.

Blueprints

Blueprints are unlocked in four tiers. To unlock a blueprint in a tier, at least one blueprint in the previous tier must be unlocked (not required discovery). Once unlock a blueprint in a tier, all blueprints in the next tier will be available to unlock. It is possible to boost your Invention level to unlock the next tier.

A total of 590 currency (295 in Dwarven Currency and Goblin Currency) is required to fully unlock both technology trees. It is equivalent to completion of 20 tasks (at 15 currency per task) for the chosen tree and 30 tasks (at 10 currency per task) for the other tree.

Switching technology tree costs 100 currency (7 tasks at 15 currency per task) of the discipline currently specialised in. If switched once, it would need 27 tasks (7 for switching and 20 for chosen tree) instead of 30 tasks for the other tree.

Tier	Level	Currency	Dwarven	Goblin
1	40	10	Corporeal components	Pestiferous components
2	50	25	Sprinkler MK1	Mechanised chinchompa
			Mining accumulator	Woodcutting accumulator
3	60	35	Book switcher	B.A.N.K. Stander
			Calorie bomb	Monkey mind-control helmet
4	70	55	Auto-sanctifier	Electrified box trap
			Kinetic cyclone	Oldak coil
			Dungeoneering lock melter

Achievements

• Draught Includer ( 0) – Discover all invention blueprints. (X/159)
• Invention Gives Me the Blues ( 0) – Purchase all of the blueprints for the Invention Technology devices.

Update history

This information has been compiled as part of the update history project. Some updates may not be included – see here for how to help out!

• patch 27 March 2017 (Update):
  • Stackable junk refiners can now be used to complete invention tech tree tasks.

• patch 6 June 2016 (Update):
  • Tech tree tasks are now only blocked for the player when all tech trees are fully unlocked.

• update 16 May 2016 (Update):
  • Reworked cave goblin technology tree and dwarven technology tree.

Trivia

Human technology concept art from RuneFest 2015

• The human tech tree was originally planned to be the default tech tree for all players starting the Invention skill. It would have been based on the themes of Guthix's energy. The vast majority of Invention devices were going to be in the human tech tree, and would have been original creations of the player.
• The tech tree system was released with Invention on 25 January 2016, but on 16 May 2016 it was reworked and expanded. With this update, players that had researched blueprints in either tech tree had them locked again, the inspiration spent refunded (up to the cap of their current level), and a gift of some currency for each blueprint re-locked.