Thanks for playing the game! I'm very happy to hear that the performance on your machine was acceptable, since that was a concern of mine (I actually ended up rewriting the graph evaluation such that it processes all Terrabots in a single pass over all possible branches, which seems to have been the key to make it run at a reasonable framerate). At the moment the graph evaluation is still done completely in GD script, but for more complex graphs a port to C# might be necessary.
I already have some ideas for implementing a step-by-step 'campaign' style tutorial, which should be much more manageable without the pressure of a game jam deadline :)