The Epic First Run programme allows developers of any size to claim 100% of revenue if they agree to make their game exclusive on the Epic Games Store for six months.
After the six months are up, the game will revert to the standard Epic Games Store revenue split of 88% for the developer and 12% for Epic Games.
One more thing - really annoying how if you click a game in the sidebar it launches it instead of going to the game in your library. It’d be fine to have a smaller launch button in the same space, but having the whole thing do it is not very intuitive.