In Part 6 of my Unreal Engine 5.1 Endless Runner series, I finally add a proper “lose” state—so when the character hits an obstacle, something actually happens. I create a clean Death function inside BP_RunnerCharacter where I disable movement, disable input, and switch the skeletal mesh to simulate physics (make sure you target the Mesh, not the Capsule). I also enable the mouse cursor so the player can interact with the UI right away. After that, I hook the Death function into my obstacle blueprints using Box Collisions and Event Actor Begin Overlap. I also check whether the character is sliding, and only trigger death when they’re not. Then I pause the game after a short delay and build a simple GameOver widget with a background blur, a big “Game Over” text, and two buttons—Restart and Exit—using console commands (restartlevel and exit). To finish it off, I set up ragdoll collision / a physics asset so the character actually collapses on impact. This UI is temporary, but it’s a solid base we’ll improve later when I add score, final score, and high score.