Universal Library vs XYMYX·Chess
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Universal Library
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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.
XYMYX·Chess
Experience chess with a revolutionary twist: simultaneous moves. This game transforms strategy with a new rhythm, offering a fair, vibrant, and unpredictable playing field. Rediscover the joy of pure exploration and thinking in every match.
- Simultaneous move gameplay
- Transformed strategic universe
- Fair and unpredictable matches
- Focus on exploration and thinking
- New rhythm in time
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XYMYX·Chess is chess with simultaneous moves, where both players act at the same time. Without new pieces or a different board—only a new rhythm in time—it completely transforms the strategic universe and turns every match into a fair, vibrant, and unpredictable terrain. Chess is reborn in a new form. It invites us to play with the same curiosity and passion we felt the first time we discovered chess. Instead of memorizing openings or accumulating data, XYMYX·Chess brings players back to the pure experience of exploration, thinking, and enjoyment.
Screenshots
Verdict
The clearest difference is ads: Universal Library at none against XYMYX·Chess's shown. Universal Library also leads on iOS requirement (12.0 vs 15.0). XYMYX·Chess's advantage is update cadence (every 4 weeks vs every 40 months) and device support (3 vs 1). On price 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Universal Library ships an update every 40 months, XYMYX·Chess every 4 weeks. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.
| Parameter | Universal Library | XYMYX·Chess |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 40 months | Every 4 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 180 MB | 164 MB |
| Age rating | 4+ | 4+ |
| Developer | Jonathan Millen | BATISCAFO LLC |
In-app purchases
Universal Library
No in-app purchases
XYMYX·Chess
No in-app purchases
Questions
Is Universal Library free?
Is XYMYX·Chess free?
Do Universal Library or XYMYX·Chess have ads?
Which is updated more often, Universal Library or XYMYX·Chess?
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