I'm DetwerB, an indie game developer.
My current project is Pebble Thrust, a launch-and-upgrade game. You roll a rock down a ramp, fire its thrusters, and see how far it gets. Every run earns cash for better ramps, thrusters, fuel tanks and aerodynamics, until the pebble makes it to space.
A free demo is available to play. Follow to get updates as the game develops. Feedback and bug reports are welcome in the comments.