Don't have a game idea

I've got plenty of ideas, per se: a shmup where you only have nine bullets, a platformer where you can only jump nine times, or a RPG where the battle calculations are influenced by 9*something.
Also a sailboat, but who knows how the theme can be incorporated into that.

hidas on 2011/04/03 12:43 of Toxicblob

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How about a sailboat with 4.5 oars on each side?
How about using a polygon with nine points for each object in the game?
I've also thought about using a pentagon as the game board, and players can move about on each of the vertices. You could only use magic and attacks on the objects on vertices adjacent to your vertice.
In IRC I suggested people looking for an idea might look at the flash game Cursor*10