20 Most Intense Video Game Moments Ever

7. Fighting Omega Flowey - Undertale

Yes, I could've gone with any number of plot twists involving what Undertale's HP is or having to tell Asgore that you killed his wife, but when Flowey, a real a-hole, turns into a gothic concoction of middle school science class experiments... insane is the tip of the iceberg.

Having consumed all the most powerful souls in the land, Flowey taunts you by saying he'll delete your save before growing to the size of the screen and blasting out aggressive drum & bass music - all while showering you in projectiles and flame jets.

The beauty of this fight is you can't really lose, but the onslaught of visuals and sound design is the embodiment of designer Toby Fox having a LOT of fun with Photoshop.