Punt

Punt is a first person environmental puzzle mod for Half-Life 2 developed by Reepblue and rHectorical and was announced in 2012. A playable version was released on Reepblue's public Onedrive. The player is equipped with an experimental device called the E.C.H.O. (or, the Punt Gun), which can be used to pick up cubes and punt puntable buttons.