- Slinky is a closed, native ghost client built for legacy MC 1.7.10 and 1.8.9 ranked PvP. Opal is $8.99 and built for the current MC 26.2 release.
- Opal ships 70 modules across combat, movement, visual, world, and utility. Slinky ships 50+, focused entirely on ghost play.
- Slinky's price isn't published anywhere. Opal's is: $8.99, once, no subscription.
- Want native injection under Lunar Client or Badlion Client? Slinky does that. Want current-version minigame combat with a launcher install? That's Opal.
- Neither client is open source. Both are closed, proprietary builds.
At a glance
| Feature | Opal | Slinky |
|---|---|---|
| Price | $8.99 | Paid, no public price listed |
| Interface | A custom glass UI engine built on Blaze3D | Custom overlay via OpenGL, plus a configurable GUI and arraylist |
| Feature count | 70 modules across combat, movement, visual, world, and utility | 50+ modules across combat, movement, visual, and utility |
| Tuned for | BedWars / SkyWars-style minigame combat, plus a quieter set for most servers | Legacy 1.7 / 1.8 ranked PvP |
| Ghost (quiet) set | ||
| Setup | Launcher: log in and play | Native loader injects a DLL into the running process |
| Updates | Actively maintained in 2026 | Actively updated, public changelog and Telegram feed |
| Minecraft version | MC 26.2 | MC 1.7.10 and MC 1.8.9 |
A current client versus a legacy specialist
Opal runs on MC 26.2 as a Fabric mod, the version being played right now. Slinky targets MC 1.7.10 and MC 1.8.9, the versions that defined early competitive soup PvP, and it gets there by injecting natively into the Minecraft process instead of loading as a mod. These two aren't really fighting for the same player. Opal plays the current game. Slinky plays the game a large slice of the ranked PvP scene never left, and to its credit, it has stayed actively updated there, with a public changelog and a Telegram feed to prove it.
Price: one number is public, the other isn't
Opal costs $8.99, flat, lifetime, listed right on the page you're reading. Slinky is run as a registered commercial business and charges for its client, but its own documentation doesn't publish a price anywhere we could find. Maybe that's a business choice, maybe it's an oversight. Either way, only one of these clients you can budget for before you've talked to anyone.
One client with two modes versus a pure ghost build
Opal ships a loud set tuned for BedWars and SkyWars-style combat and a quieter set built to hold up on most servers, in the same $8.99 download, plus an embedded scripting engine for anyone who wants to extend either side. Slinky skips the loud half entirely. Every module it ships, from Aim Assist to Auto Block to Auto Soup, is built around one goal: staying usable against anticheats and surviving a human reviewing a screenshare, down to modules rewritten to simulate legitimate inputs. If ghost-only is genuinely all you want, that single-minded focus is Slinky's real strength, and its resource-pack-style profile system for saving loadouts is a clean piece of design worth crediting on its own.
Setup: a launcher versus an injector
Opal installs through a launcher: log in, launch, play. Slinky is a native loader that injects a DLL into the running Minecraft process, and that's also why a single build covers Vanilla, Forge, Lunar Client, and Badlion Client without separate versions for each, a genuine advantage of the native-injection model that Opal's Fabric-mod approach doesn't attempt. The tradeoff is a fixed, named binary sitting in memory: convenient right up until something learns its name.
Platforms
Opal runs on Windows, macOS, and Linux. Slinky supports 64-bit Windows and Arch Linux, with no Mac build at all. If you're on a Mac, that decision has already been made for you.
When Slinky is the better call
Be honest about which game you're actually playing.
Pros
- You're still playing ranked or soup PvP on MC 1.7.10 or 1.8.9
- You want one build that runs under Lunar Client or Badlion Client without a mod loader
- You want a purely ghost-first client with no loud feature set to manage
- Its profile system for saving loadouts is genuinely well designed
Cons
- No public price listed anywhere
- No current-version support: MC 1.7.10 and 1.8.9 only
- No Mac build: 64-bit Windows and Arch Linux only
- A named binary injected via DLL is a static artifact once its signature is known
If you want a client built for the game being played right now, a launcher install, and combat tuned for modern minigames out of the box, that's Opal.
FAQ
No. Opal targets MC 26.2 as a Fabric mod. If you need legacy 1.7 or 1.8 support, Slinky is built specifically for that era.
Opal installs through a launcher: log in, launch, play. Slinky uses a native loader that injects a DLL into the running Minecraft process, which is why it works under Vanilla, Forge, Lunar Client, and Badlion Client without separate builds.
No. Like Opal, Slinky is closed-source and proprietary.
$8.99, one time, lifetime.
Opal does. Slinky's documented platforms are 64-bit Windows and Arch Linux only.
Lifetime license, instant delivery, no subscription
Disclaimer
Independent comparison. Slinky is a trademark of its owners; its use here is nominative and implies no affiliation or endorsement. Competitor details are accurate to the best of our knowledge as of 2026 and may contain errors.
