I would like to point you to my updated “rock stingers pack”](Rock Stingers in Music - UE Marketplace), a collection of 32 short clips in rock style, a few seconds long, to be used for intros, endings, deaths, victories to emphasize particular moments in games.
previously it contained 25 clips, now the update is live and the content is increased to 32 stingers.
the sound and mood of these clips perfectly match the one of "rock loops pack", a collection of short rock loops suitable for video game and indie game development. It contains 15 short energetic rock loops, several beats long and seamlessly looping, to be used as level music, credits, menu, hold screen, etc. They share the same tempo and sounds, so they can be connected together to create a longer track if needed.