Port a Wii game to Steam

Yes, if you created the game or hold a license. You rebuild it in a modern engine and export a desktop build for Steam. Summer Engine generates playable scenes from a description of the original, lets you edit in C++, GDScript, or C#, and exports Windows, macOS, and Linux builds.

They do not transfer directly, so you replace them per action. Swings become button presses with the same animation, tilts become stick axes, shakes become holds or rapid presses. Gyro aiming is a good optional mode on controllers that have a gyro, but it should never be the only input path.

Yes, and it is the cleanest conversion in this cluster. The pointer was an absolute screen position input, which is what a mouse provides, with more precision. Remove sensor bar and recalibration messaging, and retune any difficulty that was balanced around pointer wobble.

For 3D content, raise render resolution, texture resolution, shadow map size, and draw distance, since the geometry and animation remain valid. Redo the interface entirely, because Wii menus were sized for television viewing distance and often sat inside overscan safe margins that modern displays do not have.

Yes, but you must handle controllers explicitly: runtime connection and disconnection, deliberate player assignment, mixed device types including a keyboard player, and correct glyphs per player. Steam Input helps, and remote play together lets people play a couch design online.