hi everyone.I have got a game idea recently.I think it is simple but interesting.

It is actually a simple drawing game.The above picture is the simple demonstration. Firstly, a transparent stroke will be shown (in the example above it is a circle.) player need to use a mouse(the best is touch screen or a stylus) to draw the same stroke.
The transparent stroke is not only a indicator but also a boundary for the player to draw.The player must draw within the transparent stroke, otherwise he has to draw it again.
I decide to let the next stroke appear after the player finish the previous stroke so that the player has no idea what he is drawing until finishing certain numbers of stroke.I think it has fun.
And finally the player will finish a nice drawing. To make the game more fun, i think a competition is a must. Compete with CPU or other players. The faster one will be the winner.
To be a one player game, some game level design is needed .May be the player draw some simple object first and then the difficulty of the drawing stroke can be increased gradually with the stages.
some advanced feature: different pen tools, colors,different style of drawing(cute,cartoon,abstract.....), a game story.
i have try to find the similar game in the industry and i got three .all are NDS games.
1.Drawn to life
http://5thcell.com/games.php?menu=0&game=d2l2.Paint by DS
http://www.mercurygames.com/?txtShow=product&ref=243.Touch! Kirby's Magic Paintbrush
http://www.nintendo.co.jp/ds/atkj/index.html