Is it wrong of me to want to troll everyone by creating a demake of Dear Esther as a Half-Life 2 single-player map? You can run around the island with a crowbar fighting headcrabs while audio clips of the characters from past games play. The figure in the distance can be G-Man. The tower can be guarded by Overwatch soldiers.
Oh man, I need help. Or a cookie. Yeah, I really need a cookie.
UPDATE: I just couldn't help myself.
