itch.io

Blending elements of action and exploration, these games often feature combat, puzzle-solving, and narrative-driven quests. Players navigate immersive worlds, overcome obstacles, and engage in dynamic battles while uncovering the story and developing their characters' abilities.

Featuring aesthetics, gameplay, or themes reminiscent of classic video games. Often characterized by pixel art, chiptune music, or mechanics popularized in earlier gaming eras.

Science-fiction. Commonly including things like aliens, advanced technology, and settings of outer space or distant planets. 

Unity is a game engine for 2D, 3D, AR and more

Unreal Engine is a 3D game creation tool