Is there an end to the game "The Void"?

I personally couldn't get very far with this game without applying this difficulty patch, and a walkthrough. Rest assured that there is an end to it, though.

To add to the accepted answer: yes, there are a number of different endings in fact. While they are all rather similar, they involve different characters. The conditions for the different endings are as follows:

1. Survive until the end of Cycle 35 and do not save a Sister.
2. Reach Turgor and draw Breakthrough on a sister (there is a slightly different ending for each sister).
3. Reach Turgor and draw breakthrough on the Nameless Sister's tree and then on the Nameless Sister. This requires a lot of colour and is the most difficult ending.