Keen fan of Mega Man on the NES, but can’t spare the money to finally be able to possess a cartridge? This this might be a possible solution: Power Blade.
The title executes a whole load of concepts that you can find in Mega Man, for a fraction of the price! It might not be the authentic blue bomber, but if you’re after some solid 8-bit platforming from a trusty developer, Taito, you’re going to get your money’s worth.
PAL Power Blade cartridges on eBay.