Infinite Futures is an ambitious product, an attempt to convert D20 Future to make them fully compatible with the Pathfinder RPG. It's a decent attempt, and will be useful for gamers wanting new feats, futuristic and modern weapons, cybernetics and alien races to add to their PFRPG campaigns or who want to update an old D20 Future campaign.
At over 450 pages, the sourcebook is a decent bargain. However, I really wish the Avalon Game Company had gone a bit farther in their changes. Pathfinder felt like a really ambitious and innovative new take on D&D 3.5. By contrast, Infinite Futures felt somewhat tame. Aside from some minor mechanical changes, large portions of the text seemed like a straight translation of old D20 Modern SRDs. Character concepts in this converted system aren't quite as customizable as a Pathfinder Rogue or a Sorcerer and the dozen or so bloodline options available to that class.
Avalon Game Company illustrated Infinite Futures with stock art by Sade and other CGI artists, many of whose images I've used myself. However, I did feel that some of the art was badly chosen and just tossed into the manuscript to color a page without concern for the text on that page.
Finally, there are a few elements brought over from the Pathfinder RPG to this system and imported with no translation. Look in the section on diseases and curses? Why are there curses in a sci-fi game? Your guess is as good as mine. Also, why are all the diseases fantasy standards like 'devil chills' or 'cackle fever'. Where's AIDs, ebola and weaponized nanotech?
These complaints aside, Infinite Futures is a strong and ambitious release from a fairly young company. I definitely want to see more products in this line, and want to see some more support for a sci-fi / fantasy rule set that seems to have a lot of potential.
[3 of 5 Stars!]