History VideoGame / PlagueTree

''Plague Tree'' is an IdleGame made in UsefulNotes/TheModdingTree by Vorona and released in 2020. The game's goal is to reach as many cases of the UsefulNotes/COVID19 disease as possible (initially called the "Vorona Cirus"). As you go down layers, you unlock things that greatly improve virus spread and strength, way beyond what the real virus could possibly accomplish.

-->''Florida Man attempts to port Plague Tree to UsefulNotes/PICO8, is stopped by the heat death of the device.''

* RedHerring The 20th [=UnBoosted=] Virus milestone, which buy-maxes rRNA buyables and requires resetting in less than 3 seconds, also states that it lessens the "UnRetRNA" cooldown to 14 seconds. You'd naturally assume this means you would get it before milestone 21 which shortens that cooldown to 13 seconds, but not only will you get milestone 21 first, you'll be getting many more later milestones and several upgrades that continue lessening the cooldown long before you finally get milestone 20, meaning both the cooldown benefit and its placement in the milestone list is a lie in regards to when you'll achieve it..

* DoubleUnlock: Unvaxxed uncoaters introduce milestones which have additional effects that are unlocked only once the player accumulates enough uncoating power, alongside introducing upgrades that require achieving another condition before you can buy them with the main resource (in this case gathering enough PrPres before you can spend uncoaters).

* DoubleUnlock: Unvaxxed uncoaters introduce milestones which have additional effects that are unlocked only once the player accumulates enough uncoating power.

** Many buyables through the game eventually become "distant" after buying enough of them, which massively increases their cost scaling with every further purchase. Many upgrades and other effects are dedicated to pushing back the starting points for these indirect softcaps

** In the infecters layer, you discover cases are limited by immunity. Upgrades divide it to weaken the effect significantly, but sometimes it will limit production anyway. It eventually puts max cases gain at 1F10, but Anti-Capped pushes it further.

* ColorCodedForYourConvenience:

** Replicators: Purple

** Symptoms: Green

** Unvaxxed infectivity: Pink

** [=UnRecover=] has a cooldown of 45 seconds between uses. [=UnBoosted=] Virus milestones make that increasingly shorter, until it's always active with the 2.5e14 MMNA milestone but can be triggered again to have its effects stack though that becomes unviable when unvaxxed tRNA increases so fast you're not able to click it again. A similar thing is done with [=UnRetRNA=] that initially has a 60-second cooldown, but it doesn't get an always-active milestone (however, it does get an auto-trigger milestone) and fall below 13 seconds.

** Above 1e11,000,000 unvaxxed severity base gain, it becomes gets softcapped and has a fractional power applied to it. Another softcap is applied at e100,000,000,000.

* NotCompletelyUseless: Unvaxxed symptom milestones 60, 61, and 62 are just random facts about COVID-19 rather than boosts or convenient features. This seems useless at first glance, but the [=UB23=] upgrade doubles [=UnBoosted=] Virus gain per US milestone after 59, making them actually helpful for gaining that resource.