one of, if not my absolute favorite game ever. from the moment i first heard about it i felt that it would be exactly what ive been looking for in a game for years, and it completely shattered my expectations.
contested with lethal company for being my favorite game ever, i cannot recommend it enough (even if you dont really like puzzle games!! its accessible to everyone and really fun no matter what)
dont let the fact that am2r is a fangame scare you off -- id argue that am2r looks and feels just like a mainline metroid title, and the amount of love that went into it is immediately apparent. very damn good game