While not entirely a fan game so much as it is a porting effort, I am particularly excited for the in-development fan port of Tomb Raider II. The port of the Tomb Raider 1 expansion pack Unfinished Business is already a stellar project, so I’m hopeful that TRII will be even better. If the whole game is able to be ported by a lone dev, just imagine how awesome it could’ve been if Core Design hadn’t been hampered by Eidos signing a exclusivity deal with Sony.
Not to mention, porting Tomb Raider II to Saturn also opens up the floodgates to the notion of porting the rest of the 5th-gen entries 🙂