It sounds like you're looking for a (file) for M.U.G.E.N (a free 2D fighting game engine) featuring Kamen Rider characters.
Because it is a 2D sprite-based engine, it can run smoothly on almost any modern laptop or desktop PC. Top MUGEN Kamen Rider Projects to Download download mugen kamen rider
By default, MUGEN uses the keyboard. To change controls, go to Options > Input Config > Key Config (or Joystick Config if you are using a controller). It sounds like you're looking for a (file) for M
Make sure to save your control configuration before exiting the options menu so you don't have to remap them next time. Tips for the Best Gameplay Experience To change controls, go to Options > Input
This community site hosts a variety of Tokusatsu-themed MUGEN content, including Kamen Rider Decade and Diend characters.
YouTube descriptions, fan forums (MUGEN Guild, MUGEN Archive), or personal blogs. Pro tip: Search "Kamen Rider MUGEN full game download" rather than just the keyword.
Missing files or incompatibility with modern Windows versions.