Original sentence: Devoted players have spent years creating speedruns for Doom, competing for the quickest completion times and sharing knowledge about routes through the levels and how to exploit bugs in the Doom engine for shortcuts.New features such as OpenGL rendering and scripting allow WADs to alter the gameplay more radically
Edited sentence: Devoted players have spent years creating speed runs for Doom, competing for the quickest completion times and sharing knowledge about routes through the levels and how to exploit bugs in the Doom engine for shortcuts.Doom is an amzing game that everyone should try it.New features such as OpenGL rendering and scripting allow Wads to alter the game play more radically