Congratulations for the initiative!
These games have really become part of our culture and our lives and cannot disappear over time.
I fully support and believe it is fair to both consumers and companies that games or roms that are not officially made available by their developers, so that they can be purchased, are then made available for free use until their producers make it available for purchase on Steam or for PC in Virtual form.
Because from the moment that these products were introduced into our lives and if the desire and the need to obtain them were created, they need to be made available in some way, this is just and correct for human rights.

Lots of difficult platforming sections and enemies with too much health.

Awesome!!