The Stars Reach Skill Tree, Explained Properly

Rule one: XP comes from usefulness and risk

Stars Reach's designers made a deliberate decision to break the oldest loop in the genre. You do not gain experience by repeating an action. You gain it by doing something that is useful to yourself or others, or that incurs risk.

The official design post by Dave Georgeson gives worked examples, and they are worth reading literally rather than as flavour text. A Ranger who learns to set up temporary camps earns nothing for a camp that sits idle — they earn when that camp is used by themselves or other players to rest or re-equip. A Weaponsmith earns nothing for the act of making weapons; they earn when those weapons are used, and the more the weapon gets used, the more they earn.

The same shape applies across the trees. Entertainment earns when your performance benefits others. Leadership earns while you are actively providing benefits to squad members. Xenobiology earns when people use the libraries of information you create. Medical skills earn when you heal or restore other players. Combat engineering earns when your traps or turrets are effective.

Weapon trees are the simplest case: you earn when you cause damage with the weapon, because dealing damage incurs risk to your character.

The design intent is explicit — this is about your relationship to a universe where danger exists, and how your actions affect other people directly and indirectly.

Rule two: the tool is the tree

Every skill tree has a tool associated with it, and to gain XP in that tree you must be using that tool. Improving at mining means using the mining tool. Improving at leadership means using the rally banner. Getting better with an assault rifle means using the rifle in combat.

You cannot equip everything at once. The Steam store page for the Early Access build states five tool slots. Which five you carry decides both what you are currently capable of and which trees are currently advancing.

This is the mechanism that produces specialisation without classes. There is no screen where you declare yourself a miner. There is a belt with five things on it, and what is on the belt is who you are this session.

Tools also come in different quality levels, which affect their abilities. Since every item in the game is player-crafted, tool quality connects your personal progression directly to the health of the wider economy — a better tool from a better crafter makes you materially more effective.

Rule three: you can learn everything, but not hold it

The official answer to 'can I learn every skill' is yes and no. Yes, every skill in the game is learnable by any character. No, they cannot all be active at once.

There is a maximum number of skills a character can keep in practice at any one time. Once you are at that ceiling and want to learn more, you must first let some previously-learned skills atrophy and fall out of practice.

Atrophy is not deletion. You do not lose the skill. You are simply out of practice and cannot use its capabilities at the moment. Crucially, you retain the benefit of the original effort — bringing an atrophied skill back is much easier than learning it the first time, and is described as essentially a matter of time rather than a fresh grind.

This is a genuinely elegant solution to a problem most MMOs solve badly. Hard respec systems punish experimentation. Unlimited skills destroy specialisation and make every character identical at cap. Atrophy allows long-term breadth and short-term focus simultaneously.

Rule four: Specials live inside the tool

Unlocking nodes in a tree gives you three things: bonuses to existing abilities, root nodes into other trees that branch off the one you are climbing, and Specials.

Specials are new abilities used with that tree's tool. Forestry might let you force trees to grow so you can replant faster, automatically de-limb a felled tree, or cure diseases in growing trees. Leadership might let you inspire the team with stat boosts, create formations that grant bonuses, or use crowd control against enemies. The Laserwhip might let you lasso an opponent, strike at range, or entangle a foe like a bola.

Two constraints turn this from a normal ability system into something distinctive. First, you can unlock many Specials but only enable two at a time. Second — and this is the part that confuses everyone — the Specials you have enabled are crafted into the tool you are using.

So switching Specials is not a menu action. It means buying or crafting a different version of your tool with the Specials you want built into it. Your build is not stored on your character; a meaningful part of it is stored in your equipment, which was made by a player.

If you have unlocked a Special and cannot find it on your bar, this is why. It is not a bug.

Practical advice for building a character

Given all of the above, here is how to approach it during Early Access — with the caveat that a progression wipe lands before 1.0, so nothing you do now is permanent.

Work backwards, not forwards. Decide what activity you want to be doing, find the skill that enables it, then use the Skill Kiosk to trace its prerequisites and buy in that order. Buying whatever is affordable as soon as it is affordable is the most common way to waste early progression.

Respect the five tool slots when planning. A build that needs six tools to function does not work. Before committing to a direction, check what it actually requires you to carry.

Test atrophy deliberately while it is free. The most consequential unknown for any long-term character is how long recovering an atrophied skill really takes, and Early Access is the only period where finding out costs you nothing.

And do not over-plan. The system is explicitly designed so that early choices are not fatal — you retain the benefit of everything you have ever learned, and recovery is a matter of time rather than starting over.