At first glance, Gain Ground appears to be a slow, ugly, top down shooter similar to Commando. From these perspective it's not much fun at all. But it's actually something different. Instead of scrolling through the top of the screen to the end, you are faced with a series of single screen levels, with an exit to reach. It plays more like a puzzle game, as you traverse a sort of slow-mo bullet hell to take out enemies one by one, allowing further process towards the exit. Extra lives are gained by finding other warriors on the battlefield and leading them to the exit. This in turn allows you to play them in subsequent rounds. Each warrior has different weapons suitable for different situations. I found this combination of abilites and obstacles interesting. However like many of these games it was frustratingly hard, so I don' know how much more I'd play it. I played this game twice, so I'll value it at 50 cents.
Kid Chameleon did not make a good first impression on me. It appears to be a pretty straight Mario rip off. I did not like the art design. I did not like 'Kid', just looked like a cool kid with sunglasses. This game boasts many many levels, and many different power ups to gain, but I don't know if I have the stomache for more generic platformers. I value at 25 cents.