Gravirings

Gravirings is a retro real-time strategy game, where you have to find
a way to the end of each level.

The strategy part of the game consists in finding the right moment to,
interact with the level elements, to free the way to the level end.
Timing is also very important!

In some levels there are portals, that can be used to get from one
point of the level to another, but pay attention, not every portal
is a good choise.

Have fun to find the right way in over 40 levels. Can you pass them all?