The Pg Tree is an Idle Game made in The Modding Tree by pg132 and released in 2020. While it does look like the average no-effort template mod at first (since it has a green P dot and the version number is 0.0), it has enough content to stand as a short mod in its own right, with three school-themed layers. It is playable on Githack.
This game provides examples of:
- Challenge Run: The middle school layer unlocks challenges that involve reaching a certain amount of points while under a point/prestige reduction. Each completion raises the goal and the challenge's overall difficulty, but certain upgrades can make the latter more forgiving.
- Color-Coded for Your Convenience: Each layer has its own color.
- Prestige: Green
- Elementary School: Yellow
- Middle School: Rust
- Diminishing Returns for Balance: The Exponentiation upgrade has a softcap for its effect. It is supposed to be removed by the Solving Equations upgrade, but apparently doesn't.
- Export Save: You can copy the 1KB+ save file by pushing a button and paste it into the game.
- Reset Milestones: The Middle School layer has milestones named after things related to school (Student, Group Project, Class, Grade, and Middle School) that are unlocked for having a certain number of Middle School Students (from 1 to 640). The bonuses include keeping a row of prestige upgrades per milestone, a new row of upgrades, raising Middle School Student gain to 1.5, and gaining a percentage of Elementary School Students per second.
- Theme Naming: Upgrades in the prestige layer are named after mathematical operations and terminology, while the ones in school layers are based on typical respective learning activities.