I'm a indie developper, luckily I've another job to paid my bill ! All my devel project are free.
I'm about to deliver another game : BounceBall. A game of reflexe and I hope with a few thinking !
If you have some interest, you could donwload the level editor which permits, of course, to create level, but also to test each level.
Obviously, you could also create level that could be join to the final game.
I hope also for any returns, suggestions and so on.