Color Switch is the best example of a solution for when you can't seem to develop the perfect gaming product, but feel that you have the right concept. The avenue is to implement your concept into different modes of play. Who knows which one people might like.
A game of Color Switch topically has you controlling a colored ball (or some other gizmo) that needs to make it past a series of obstacles in order to reach the finish line. Granted, in some games you will control the environment itself, but most of the time you will either tap to launch the ball in a certain direction, tap repeatedly to keep it afloat and advance, or tap to change course by 90 degree while going in a zig-zag pattern. The color switching part is not apparent in every game or level. However, in some, you will be hitting certain objects that will change your ball's color, for example from yellow to purple. In these instances, you will need to pay attention, since the obstacles are also color coded. You may pass through a wall that's of the same color as your... ball, but you will fail if you hit another.
Each game consists of 50 levels, which are split into three difficulty categories. There is also an Endless mode for each one. Now there are many variations on the same theme, including Christmas, Valentine's and Halloween, but the core concept feels the same. Some games I've found to be alright while others boring, but few are rather challenging.
Color Switch has a decent variation of games on the same theme. The gameplay is straightforward but rather uninteresting. The developers tried to create variety by making several sub-games, but none feel like a full product.