Silver Upgrades

**Silver Upgrades** are a mechanic in Swarm Queen. When you obtain enough Silver Stars from a few levels, you can acquire some skills for your Queen, all having different benefits and advantages. There are four classes for Silver Upgrades: Survival, Income, War, and Revenge.

## Survival

This tree is about defensive bonuses through and healing bonuses.

### Healthy (8★)

In-game description: *%20 Queen health.*

This upgrade makes your Queen have 20% more health in the battle. It costs eight silver stars to upgrade. It also makes it possible to upgrade to *Potent Stem Cells* upgrade (you can't upgrade directly to it before upgrading to Healthy).

#### Tips

* It is useful on levels where you might lose a lot of health, and if you want it to be easier to get the star that requires your Queen to stay above 50% health.

### Potent Stem Cells (12★)

In-game description: *Queen heals +1 when you create a minion.*

When you spawn the egg of any minion, your Queen heals by 1 HP. It costs 12 silver stars and requires *Healhty* upgrade to be upgraded to (technically 20 silver stars in total). It also unlocks the *Defend Your Queen!* upgrade.

#### Tips

* Similar to *Healhty*, it is useful when you need to stay above 50% health (for an extra star or a better defence).
	+ If you reach below 50% health, make many minions and reach above 50% again and win like that, it *WILL* count as you stayed above 50% health

### Defend Your Queen! (14★)

In-game description: *Your minions get an extra 25 health when they spawn, and lose it over a few seconds.*

When you spawn any minion that is not a Nectar Producer, it has 25 extra health points than normal. It loses 2 HP every second, and only 1 HP when one extra health is left. It is the highest upgrade for Survival.

#### Tips

* When your Queen is getting overwhelmed, your minions have a little more health, which increases your chances of survival.
* Your minions might get shot by Neurotoxin, this upgrade helps them not get way too affected by it, especially when Neurotoxin is shot nearer to your Queen.

## Income

The Income upgrades as their name suggests assists you in your economy through getting your nectar faster or reducing nectar costs.

### Resource Rush (8★)

In-game description: *Your harvesters build even faster when you have less than 4.*

This upgrade makes your Harvesters build very quickly when you did not spawn four of them. It also makes you able to unlock *Tactical Swap* for twelve stars.

#### Tips

* Having four harvesters before Red does simply makes you gain more nectar, and you'll probably build attackers faster.
* This upgrade is also a very useful way to get ahead in your early game economy, as your first 4 harvesters spend less time in queue and more time producing nectar

### Tactical Swap (12★)

In-game description: *Downgrading or cancelling your egg mutations refunds more nectar.*

With this, all or almost all of the nectar you used to upgrade to something will be back by downgrading it (even if it isn't in the mutation process).

#### Tips

* In levels where the enemy might change her tactic against yours and you need more nectar, this upgrade lets you downgrade mutated eggs like the enemy can to use other minions that counter hers with almost no nectar lost in conversion.

### Greedy (14★)

In-game description: *Your tier-3 harvesters have a 30% chance to give +1 nectar, BUT they have -10 health.*

It makes your third tier Harvesters, aka (spoiler if you haven't reached level 12) Super Harvesters have a chance to collect one extra nectar than usual, however *all* your harvesters will also have -10 health, plus tier-1 and tier-2 ones don't have that chance.

#### Tips

* This is a disadvantage if you play at level 12 or previous, since you only get tier-2 and tier-3 harvester upgrades at level 13 and later.
* There is a reason why it's called greedy, because your Harvesters have to lose some health to make more money, be wary of that. However, oftentimes due to the way the bug AI works it is very simple to lose enemy aggro on harvesters, somewhat trivializing the downside to this upgrade.

## War

War upgrades assist in your offense, which is achieved by making your ability to reinforce faster (whether by troops or neurotoxin).

### Rush (8★)

In-game description: *Your minions build faster. (doesn't effect Harvesters)*

Minions that aren't harvesters will build much faster.

#### Tips

* You can make a horde faster than Red Queen, if you have to make more minions in a shorter time, this might help.
* Remember, it doesn't work on Harvesters (resource rush does ↑)

### Toxic (12★)

In-game description: *Your Neurotoxin recharges 2 seconds faster.*

Normally it takes twenty seconds for Neurotoxin to recharge after being shot, but this reduces it to eighteen seconds.

#### Tips

* At level 1, 2 and 3 where you don't have Neurotoxin, this is not useful since there's no neurotoxin to recharge faster.
* This might help if enemy minions are coming too fast and your neurotoxin isn't fast enough.

### Toxin Splash (14★)

In-game description: *Your Neurotoxin has a larger damage radius.*

It will be able to damage more enemy minions in a bigger range.

#### Tips

* This is also useless at level 1, 2 and 3, because you don't have Neurotoxin ability in those levels yet.
* It can hit a little longer queue of enemy minions to weaken a bigger number of them.
* Normally, there's a limit of shooting your neurotoxin that is in front of Red Queen's nectar plants (it applies to red too, with the same distance for green), but Toxin Splash technically expands this by hitting minions that are a little more behind the line. But it still doesn't affect Harvesters .

## Revenge

Revenge upgrades help you when either Queen has low health (<50%).

### Blood Scent (8★)

In-game description: *While EITHER Swarm Queen is below 50% health, all your minions get Charge. (move faster when behind)*

Your minions get the Charge ability, which makes them move faster when behind, or hit by ranged.

#### Tips

* If your minions can't move fast enough, at least after either queen has low health, they can defend and fight better by moving faster.
* This upgrade is also useful for blitz strategies since now all minions get extra speed when one of the queens are below half
* As with all upgrades in this tree, if you are the only queen below 50% and you heal above the margin via potent stems cells then this benefit is temporarily lost until someone falls below 50% again

### Wormy, No! (12★)

In-game description: *When EITHER Swarm Queen is below 50% health, Wormy will only shoot at you very slowly.*

When the enemy overwhelmed you or you did, if Wormy is against you, she will shoot bees to you with much lower speed.

#### Tips

* You might have a little higher chance of survival if green has low health, because Wormy usually helps the enemy a lot in that situation.
* If Wormy somehow turns against you while you're attacking red with more and/or stronger minions and she's overwhelmed, Wormy will have a lower chance of shooting any bees at you.
* Combining this with Tank (or its upgrade, spoiler if you didn't reach level 17 Spike Tank) will lower your chances of getting shot by Wormy's bees even more because Tanks are able to destroy her bees with their zaps and turn her around even while they're fighting a few other enemies.
* As with all upgrades in this tree, if you are the only queen below 50% and you heal above the margin via potent stems cells then this benefit is temporarily lost until someone falls below 50% again

### F U Everyone (14★)

In-game description: *When EITHER Swarm Queen drops below 50% health, you get an extra nuke. (just once!)*

Normally, both Queens have only one Bio-Nuke per level (with some exceptions and other things changing it), but with this upgrade, whenever Red or Green have low health, you'll get an extra nuke.

#### Tips

* If you're overwhelmed and don't have a Bio-Nuke, this upgrade helps you survive. However, you need to probably change strategy or add something to it, because you got overwhelmed probably because Red found another one which countered yours. If you change it, don't downgrade everything instantly, because it needs nectar and time, while the enemy already made the mutations long ago.
* If Red is sending a big early attack, you can more reliedly use your already-existing nuke to ruin it, because you can get one if you or the enemy has low health.
* If Red is overwhelmed but she survives it/shoots her bio-nuke before dying with low health, then you can respond with the same thing, whenever she starts sending minions.
* As with all upgrades in this tree, if you are the only queen below 50% and you heal above the margin via potent stems cells then this benefit is temporarily lost until someone falls below 50% again