Remakes of older games by the indie community are almost universally enjoyable, and even mainstream remakes (such as
Bionic Commando Rearmed) tend to be quite fun as well. Along this same vein of Bionic Commando is the new freeware independent title
Streemerz. A remake of a terrible game included in the now infamous Action 52 NES compilation, it is both extremely punishing and quite fulfilling. Naturally, if you are a fan of older, NES-styled games, this is exactly what you want, and Streemerz delivers.