Comparison

Universal Library vs Rewind Survivor

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Universal Library

Features
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This game is a simulation of the universal library described in a short story, "The Library of Babel", by Jorge Luis Borges. The story can be found in several published collections and websites. As described, the Library contains all books of a certain size whose text is any possible sequence of lower-case letters and simple punctuation, even if it is nonsense. This simulation is of an interesting corner of the Library, tiny compared to the Borges vision, but large enough to get lost in. The game is an explorable virtual environment with a few treasure-hunt-like activities leading to books with meaningful content. There is a book that players can erase and rewrite to make into their own "personal vindication", and a book with a practically infinite number of pages. Individual books are searchable. You can mark and return easily to any alcove with an interesting book.

About

Rewind Survivor

In this wave survival game, death is a strategic advantage. Each time you fall, time rewinds and your past self becomes a ghost fighting alongside you. Face increasingly dangerous enemies and unlock powerful upgrades to survive.

Highlights
  • Unique rewind death mechanic
  • Past selves fight as ghosts
  • 9 enemy types with distinct AI
  • 9 power-ups with upgrade tiers
  • 4 super power-ups
  • Handcrafted pixel art
  • Cosmetic skins and trails
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Death is not the end — it's a strategy. Rewind Survivor is a wave survival game where every time you fall, time rewinds and your past self returns as a ghost that fights alongside you. But be careful — each death also makes your enemies faster, tougher, and more dangerous. FIGHT Battle through endless waves of increasingly deadly enemies. Shamblers, Bombers, Juggernauts, Wraiths, and more — each with unique behaviors that will test your skill and positioning. DIE When your HP hits zero, time rewinds. Your ghost replays your previous run, firing at enemies and orbiting around you. Stack up to 6 ghosts, then watch them grow even stronger. BUILD Choose from powerful power-ups between waves: boost your damage, attack speed, critical strike chance, life steal, and more. Unlock super power-ups like Radiation Field, Shockwave Pulse, and Void Barrier to dominate the arena. SURVIVE Enemy health, damage, speed, and numbers scale every wave. Deaths push the difficulty even higher. The question isn't if you'll die — it's how far you can push before the horde overwhelms you and your ghosts. FEATURES - Unique rewind death mechanic — your past lives fight with you - 9 enemy types with distinct AI and attack patterns - 9 power-ups with multiple upgrade tiers - 4 super power-ups with permanent effects - Handcrafted pixel art with neon-on-dark aesthetic - Cosmetic skins, hats, and trails - iCloud save sync across devices

Screenshots

Rewind Survivor3 screens

Verdict

The call

The clearest difference is device support: Rewind Survivor at 3 against Universal Library's 1. Universal Library's advantage is iOS requirement (12.0 vs 15.6). On price, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 8 level
Universal Library versus Rewind Survivor: the parameters behind the verdict, then further details
ParameterUniversal LibraryRewind Survivor
PriceFreeFree
Rating—5.0 (10 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—10 — better
Update frequencyEvery 40 months—
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.0 — better15.6
Further details — not scored
Size180 MB4 MB
Age rating4+12+
DeveloperJonathan MillenCampbell Dalen

In-app purchases

None

Universal Library

No in-app purchases

None

Rewind Survivor

No in-app purchases

Questions

Is Universal Library free?
Universal Library is free to download, with no in-app purchases.
Is Rewind Survivor free?
Rewind Survivor is free to download, with no in-app purchases.
Do Universal Library or Rewind Survivor have ads?
Neither Universal Library nor Rewind Survivor shows ads.

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