Ruffle is an open-source Flash Player emulator written in Rust. It runs natively on modern browsers (via WebAssembly) and on the desktop. It is secure, actively maintained, and requires no installation of the vulnerable Adobe Flash Player. It can run many files created for Flash Player 11.5 and older without the security risks associated with running obsolete software.
Adobe Flash Player 11.5.0: Offline Installer Download and Overview
Adobe Flash Player 11.5 (released in late 2012) was a significant update focusing on performance for rich media and interactive content. The is a standalone file used to install the player without an active internet connection. Key Features of Adobe Flash Player 11.5
Boosted hardware-accelerated 2D and 3D graphics rendering.
: Utilizes an advanced text rendering engine for clearer typography. Offline Installer Benefits