Game Remastering

I so wish I had the money and time to update and release my PC game back catalogue: Gunstorm, Gunstorm II, Outliner, Firefly, Breakout Velocity and Fallout, Trax, Martian Rover Patrol, and Arcangel. These old games aren't available anywhere at the moment and need a few weeks work each to get them working on a modern PC, and I really need to buy (well, rent) a Code Signing Certificate for them AND my extant games like Flatspace IIk. All of these have artistic merit but are barely commercially viable. Each would, I expect, make back the $100 fee for submitting to Steam, but perhaps only just and over several years. I must aim for success elsewhere and release these in some future year.