An interesting idea I had for a game in the parkour world was a game where you take turns going through a tunnel outrunning a barrier behind you that eliminates you. You then get a small amount of wood in-between each round that can be saved in between build phases (8 or so) and can be crafted into other blocks. This lasts for around ten rounds of elimination or until only one (or no) player remains after the round ends. (Yes this is inspired by the gerg minigame)