System Change: A LitRPG Adventure (System Universe Book 1)

Name: System Change: A LitRPG Adventure (System Universe Book 1)
Price: 0.99 USD
Availability: InStock
Rating: 4.7 (11259 reviews)
Author: SunriseCV

by SunriseCV

Young Adult Science Fiction Fantasy

4.7 (11,259)

4.7 stars from 11,259 reviews. One of the highest rated Young Adult books we track.

$0.99KU81% off peak

Last checked: Jun 11, 2026

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Price history: $0.99 – $5.32

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Price range: $0.99 – $5.32

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Perfect for you if...

You love LitRPG progressions where the protagonist actually becomes overpowered through grinding and smart choices.
You want an isekai that doesn't reset the hero to zero but carries momentum and established strength into a fresh setting.
You appreciate gruff, solitary characters who slowly warm to genuine connections without losing their edge.

Maybe not for you if...

You prefer tight, tightly-paced plots because this one takes time to breathe through slice-of-life moments alongside the action.
You need a female protagonist or balanced gender representation in the core cast.
You don't enjoy the grinding, stat-checking, and inventory management that defines the LitRPG experience.

About this book

Derek's philosophy is simple: fight, survive, adapt, and rely only on yourself. This approach has sustained him through the System Integration on Earth, when ordinary animals became deadly threats and Invaders arrived seeking to claim the planet as their own. For years, Derek lived as a solitary cabin dweller, occasionally visiting town. After the System came, he grew stronger fighting monsters and Invaders alone, seeing no need for others. But one day he breaks his own rule by helping with a mission that seems manageable. This LitRPG series begins on Earth years after System Integration. Derek's journey takes him beyond his home world to a new planet with its own System. The story blends elements of Isekai, LitRPG Apocalypse, and Slice of Life genres, following an overpowered protagonist as he encounters unexpected connections along the way.

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Price History

Kindle price over time. Green zones = periods when the book was free.

$0.99 – $5.32

Currently on sale at $0.99 — 81% off peak. Price has dropped 14 times over the last 4 years. Goes on sale roughly every 92 days. Typically stays discounted for 4 days.

Sales Rank

Amazon sales rank: lower number = better selling book. #1 is the bestseller.

Currently #8,134 in the Kindle store — a top-10K bestseller. Sales have softened 153% recently.

Rating & Reviews

Purple line = star rating over time. Blue area = total review count growth.

Currently 4.7★ from 11,259 reviews

Gaining approximately 162 new reviews per month. Reader interest is accelerating. Rating has remained stable at 4.7 over the tracking period.

Sale Prediction

Actual Predicted

This book is currently discounted at $0.99. It typically returns to around $5.32.

Prices shown in USD from Amazon US. We continuously pull new data to improve tracking. If dates look old, it usually means there has been no significant change since the last data point.