An active player (munkiiyebee) of Wordament has built a custom version of the game, which was used when he proposed to his girlfriend. The word search type game puts the player up against others from around the world where every player competes on the same board to achieve the fastest time. So how did he use it for the proposal?
In the above video, we see the fan/developer's custom port of Wordament that was used by his girlfriend, and as you can see the words required to be found spell out "Will you marry me?". A cheesy, but original touch since they both play the game frequently. To wrap up this story positively, his girlfriend (now fiancé) said yes. Awwh.
Source: YouTube, Wordament, via: WPSauce, thanks HD7guy for the tip!