Verify you downloaded a 32-bit build. 64-bit builds (iOS 11+) will instantly crash on iOS 5.1.1. Missing legacy USB system drivers.

Tell you which, to check for old games. Explain the jailbreaking process for your specific device. Recommend other classic games that run on iOS 5.1.1. Let me know how you'd like to proceed ! Share public link

Method 1: The App Store "Last Compatible Version" Trick (No Computer)

If you are using an older device like the iPhone 3GS, background processes can choke the limited RAM. Double-click the home button to bring up the legacy multitasking bar, hold down the icons until they jiggle, and close all other open apps before playing. Final Thoughts

If you installed a version newer than 2013, it may require iOS 6 or 7. Try finding an older build.