I played this version and the other version. I like boths. I think that the levels of the other sai game is better. I think this forest is to extensive and in the other game you go forward every time to advance in the game. But of this game i really like the habilities. I think that if you add this abilities in the other game would be amazing. The choice of possibilities in this game is good although having 4 options it becomes very long and repetitive. The graphics are really good in the two games but it the other game the graphics of the robots are better.
Sometimes it has a bug. When I approach the main tree, the sprite does not appear. And then you can't advance the game. Since no wave of enemies keep coming or anything. This only happens sometimes and before you get the skills. It is solved by closing the game and starting from the beginning. But in any case, it would be good to correct yourself so as not to have to start from the beginning.
I hope in a future you continue with this sai game or the other. It would be better the other one with this habilities.