https://doncrpg.itch.io/donc-rpg

Defenders of the New Century is a tabletop RPG set in an early 20th Century world that's beset by interdimensional Gates. Each character has a player-made superpower, which mixes in with guns, magic and melee in order to create a satisfying game engine to explore characters in. The linked quickstart guide has its own characters, setting, artworks and sample sessions to play through with you and your friends, and can be found for free by signing up on our webpage.