Hyper Light Drifter is described as '2D Action RPG in the vein of the best 8-bit and 16-bit classics, with modernized mechanics and designs on a much grander scale'. There are eight games similar to Hyper Light Drifter for a variety of platforms, including Windows, Steam, Mac, Linux and Xbox. The best alternative is Nuclear Throne. It's not free, so if you're looking for a free alternative, you could try Utilizer Deluxe. Other Hyper Light Drifter like games are Enter the Gungeon (Paid), God's Trigger (Paid), Teleglitch (Paid) and World to the West (Paid).
Enter the Gungeon is a bullet hell dungeon crawler following a band of misfits seeking to shoot, loot, dodge roll and table-flip their way to personal absolution by reaching the legendary Gungeon’s ultimate treasure: the gun that can kill the past.
Utilizer Deluxe is a mobile arcade space shooter mixed with a match 3 genre! Utilize fancy space monsters, fight with dangerous bosses, make color blocks combinations, upgrade your spaceship, complete all sectors and test your skills in the survival mode!
RUINER is a brutal action shooter set in the year 2091 in the cyber metropolis Rengkok. A wired psychopath lashes out against a corrupt system to uncover the truth and retrieve his kidnapped brother under the guidance of a secretive hacker friend.