OK, the game is great as a nice combination of story and gameplay. However, there is a major bug in the game: a player can get stuck if they go to Elyris/Xinda (or whatever) a second time and get into the facility containing the Essence havinga obtained it before. If they run out of fortify speed and zero gravity potions, the player cannot escape the facility by any means, as the portal forwards has disappeared and the fans backwards don't lift the character high enough to get back.
This is something important that needs revision as it can ruin the entire game (and throw off hours playing) if someone has (as I do) enough bad luck.
The music was a bit repetitive and the graphics were OK.