didn't want to frustrate you, especially during xmas season! i just thought that looks kind of similar to what you are working on, thats why i showed you the link. maybe you can take it as additional source of inspiration...

this brings me to some observation i realised while looking at different game ideas. it seems that there are those basic kind of game mechanics that exist for a long time since the early days. then there are thousands of clones and nowadays you only see "clones" of this ideas that mix and refurbish the old ideas with a new twist. a completely new "idea" is really hard to introduce especially because i think gamers are used to the mechanics and even need them to identify a game as a game... thus you can always sort a game into one of the already existing categories and find other games that look or play the same...

so i can only encourage you to take it as a sportive competitor and polish your game with a twist that is not alreay inside this other game.