Why bother with Unity, Unreal or even Game Maker, when you can fire up Excel and whip up a game made up of formulas? Sure, you're spending sanity instead of money, but being sound of mind is overrated! Now, stare into this void of green with me... and see what stares back at you. Created by one "C Bel", the spreadsheet does not make use of macros, which means no Visual Basic for Applications. When he says just formulas, he means it.