Not your average scifi, but a fun jaunt around an island beautifully presented.
The details are well-explained, but I'm not sure the links between locations or events are - I fear I'd be stumbling blindly around in the woods until things happen to me and eventually I die.
Side effects are fun, widely available, and only sometimes ridiculous - much like the 'monsters'.
Rounding out the 'supporting cast' to provide direction and information to players, and including some "you can see X landmark from Y location" guides to GM and players, would help make running this smooth and easy.