Lost Lagoon Trail of Destiny is an adventure game from Free Ride games. You awake on an island after a hot air balloon crash, and cannot remember who you are or what is going on. You must then solve puzzles and figure out the mystery that unfolds.
This adventure games opens with an overused conceit - memory loss, but quickly grows beyond that. The story is fairly well done and quickly moves beyond the whole memory loss aspect. You don't meet a whole lot of other characters but for a free game the writing keeps things interesting and mysterious enough that you want to keep going. There are a lot of hidden objects to find and puzzles to use them on, this game has quite a bit of content. There are also mini games that can help you or hurt you as you go along. The graphics are quite well done, and show a serene yet mysterious island. The sounds effects are nothing to write home about but do not hurt the game.
Overall this is a strong adventure game. What helps it even more is it is free. If you like adventure games you have no reason not to give this a shot.