Codex Executor – Free Download, Features & Complete Guide (2026)
Codex Executor is a free Roblox script executor compatible with Android and Windows that allows players to run custom Lua scripts in popular titles including Blox Fruits, Pet Simulator X, Murder Mystery 2, Adopt Me, Arsenal, and Project Slayers. It includes a built-in Script Hub, a Linkvertise-based key system, and a clean interface designed for both beginners and experienced scripters.
Codex has earned a solid reputation particularly among Android users for stable performance and a straightforward installation process. It is a legitimate, actively maintained executor but its platform limitations are real and worth understanding before you commit to it.
Key Features
Codex includes an integrated script library providing instant access to pre-built scripts without external sourcing. It is completely free with no subscription or purchase required. It runs natively on Android without an emulator. The interface is clean and logically organized with a low learning curve. The development team releases updates to maintain Roblox compatibility, though response times after major patches are slower than Delta’s.
How to Download and Install on Android
Visit the official Codex Executor website. Download the APK file by clicking the Download button. Before installing, go to Settings → Security → Install Unknown Apps and enable the option. Tap the APK file in your Downloads folder. Confirm installation when prompted. Open Codex and proceed to key generation.
How to Get the Codex Key
Open Codex and tap Get Key. Your browser opens to the Codex key system page. Two tasks are presented Allow Notification and Read Suggested Articles. Tap both options you do not need to read the articles in full, just tap to register the interaction. Return to the same page. After a short wait, tasks mark as complete automatically. Click Done, then Continue to proceed through Linkvertise. Follow the prompts until your key appears. Copy it, return to Codex, paste it, and tap Continue.
System Requirements
Android 6.0+ | 4 GB RAM | Octa-Core 1.6 GHz+ | 64 GB storage | Stable 4G or Wi-Fi | OpenGL ES 3.0
Codex vs. Delta Executor
| Feature | Codex Executor | Delta Executor |
| Android | Yes (Native) | Yes (Native) |
| iOS | Limited | Full IPA Support |
| Windows PC | Emulator only | Native EXE, no emulator |
| Mac | No | Yes (Native DMG) |
| Key | Yes (expires) | Mobile: Yes; PC: No |
| Script Hub | Yes | Larger, more updated |
| Post-Update Speed | Moderate | Same day |
| Anti-Ban | Basic | Advanced adaptive |
| Support | Community | 200,000+ Discord |
Conclusion
Codex is a solid Android executor. Delta provides broader platform support particularly a native Windows PC version with no emulator and no key, a native Mac version, and a larger more frequently updated Script Hub.