Zyl vs SYSCALL
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Zyl
A minimalist puzzle game focused on elegant path tracing. Guide paths from start to exit by strategically placing arrows, collecting stars along the way. Enjoy a relaxing experience with handcrafted levels and no timers or ads.
- Elegant path tracing puzzles
- 300 handcrafted levels
- Collect stars
- Cloud save sync
- Relaxing music and sound
- No timers or ads
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Zyl is a puzzle built around elegant path tracing. It's a small, quiet game. Soft colors, clean lines, and nothing on screen you don't need. Drop arrows on the grid to guide each path from its start tile to an exit. Pick up the stars on the way. When you're ready, hit Play and watch the route run. The rules: • Drag arrows onto the grid. • Send every path to an exit. • Pick up every star. • Hit Play to test the route. • Reset and try a new approach whenever. It starts simple, but then the difficulty ramps up: • Boards don't always use a clean grid. • Some levels have more than one start, or more than one exit. • Split arrows send a path off in two directions at once. • Merge arrows converge two paths into one. • U-turn arrows re-route a path from where it came. A few things worth knowing: • 300 handcrafted levels, each built around a single idea. • Levels stay small. Most of them can be finished in less than a minute. • Cloud save syncs your progress across devices. • Relaxing music and sound design. • No timers. • No ads. • No in-app purchases. • No data collected. Every puzzle has a solution. Some have multiple. The fun is in finding it.
SYSCALL
Engage in a unique reverse-engineering and assembly optimization puzzle game set within a 1990s warez BBS. Write and debug assembly programs to crack software, patch code, and navigate a virtual network. Explore a private board with tools and community features.
- Reverse-engineering assembly puzzles
- Code tracing and patching
- Network hacking challenges
- Virtual BBS environment
- Assembly pixel art tool
- Chip-tune maker
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The mobile version of the SYSCALL: RING ZERO assembly puzzle game is here! This is our world now. The world of the electron and the switch. SYSCALL is a reverse-engineering and assembly optimization puzzle game inside a private 1990s warez BBS. You will be writing assembly programs, reading listings, tracing the machine, changing the code, and shipping the crack. READ THE CODE THAT RUNS Every CRACK release is a small SYSCALL CORE program. You are able to trace programs, inspect assembly instructions, get hints and watch registers move, in order to find the way to TRACE, CRACK and PATCH programs. FOUR WAYS TO HACK THE NETWORK CRACK: Read the listing, find the secret input key, and bypass the protection. PATCH: Fit the smallest fix into fixed edit slots, then run the test battery. WORM: Program a dynamic up to nine-core rack, route values across ports, and cut lines and cycles. SCOPE: Write firmware until the live trace locks onto the ghost signal. A PRIVATE BOARD WITH REAL TOOLS Dial in, pick a node on the NETWORK MAP, read the mail, check the notes, and work the releases. The board has PHILES that teach the SYSCALL CORE, crew messages, NFOs, greets, records, and side tools. CANVAS is a freeform assembly pixel toy. TRACKER is a four-channel chip-tune maker you can set as the board music.
Screenshots
Verdict
The clearest difference is price: Zyl at Free against SYSCALL's $7.99. Zyl also leads on rating (4.7 vs 4.0) and ratings volume (38 vs 1). On ads, in-app purchases, monetization model and device support 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
Zyl is free to download; SYSCALL costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Zyl holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Zyl has 38 ratings behind it against 1, so its average is the more settled of the two.
Zyl ships an update every 2 days, SYSCALL weekly. The most recent releases landed on September 27, 2026 and September 10, 2026 respectively.
| Parameter | Zyl | SYSCALL |
|---|---|---|
| Price | Free — better | $7.99 |
| Rating | 4.7 (38 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 81.8% of reviews | — |
| Number of ratings | 38 — better | 1 |
| Update frequency | Every 2 days — better | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 16 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Fleon Labs | Chilling Moose |
Customer experience
Zyl
SYSCALL
In-app purchases
Zyl
No in-app purchases
SYSCALL
No in-app purchases









