Here's a "how-to" on creating Thexder for the NES without the use of an EPROM programmer.
Step 1) Extract the mask roms from the original Famicom game with a de-soldering tool.
Step 2) De-solder the mask roms from 10 Yard Fight to use the circuit board.
Step 3) Solder the Famicom mask roms onto the NES board.
Step 4) Test the game.
Step 5) Create a custom label and voila!
If you would like to see some of my repro work, check out my Instagram account.