well, i gave it a shot and, tbh, probably won't try it again in its current state. after a few minutes "the fun was done", and a rare occasion where i can't think of anything to offer toward the "fun factor" of a WIP i come across here. alas, it's only my opinion and maybe you or someone else has something in mind in that regard.
meanwhile, here's the obligatory screenshot with the hope it inspires more comment:
add: i think i got a glimmer of an idea, afterall - if you put the game on a timer, i think it would help. ie, "Score as many Touches as you can in 60 seconds" and/or, maybe, a 5 minute "Game Clock" plus "Score 10 Touches in 60 seconds for Bonus Points" that might double each time you earn it. you get the idea.
Virtual Nomad @ California, USA . DBPro V7.5
AMD Phenomâ„¢ X4 9750 Quad-Core @ 2.4 GHz . 8 GB PC2-6400 RAM
ATI Radeon HD 3650 @ 512 MB . Vista Home Premium 64 Bit