This game is free on another platform right now. It's an absolute blast! Reminds me of the Ratchet and Clank days, or other similar platformers (I'm a huge R&C fan). My son adores it as well. We have so much fun playing together. I'm playing it on a high refresh rate monitor at 3440x1440 and the graphics are colorful and playful. I love it. I have no idea why it only has a 3.4 star rating. It may not be worth full price (though I would certainly pay it) to some, but that's no reason to give it a low rating.
There is one thing new[er] games lack, and that is fun. I've played a lot of new games, including Bioshock Infinite, Tomb Raider, etc. These are great, but I can't seem to find satisfaction. I used to play Mobile Forces all of the time. Then something happened to my disc (not sure really) and I eventually moved on. I was thinking about this game the other day when I wanted a 'good ole shooter' to just have fun with. Quake 3 doesn't want to run anymore (still sorting that out), and it's darker than most games. When I saw this on GOG, I freaked. I didn't even question the purchase. I can easily play it over and over, even though it's over a decade old. The best part? It fully supports 1920x1080 resolution. There are games from '07 that don't even do that. Worth every penny!