Hades is available via Steam Early Access. This rogue like dungeon crawler was always designed to be early access so the fans of the game could help shape the feature rich game from the ground up.
From Steam:
+ 4 Main Biomes, plus the main hub
+ 7 Boss Fights, plus 3 unique variants
+ 8 Olympians, each with their unique Boons
+ 5 Main Weapons
+ 8 Collectible Resources
+ 25 Different Foes
+ 28 Story Characters
+ 40 ‘Daedalus’ Weapon Mods
+ 110+ God Boons
+ 26 Unique Keepsakes
+ 23 Music Tracks
+ 10,000+ Voice Lines
+ Mirror of Night Progression System
+ Pact of Punishment Scaling Endgame
+ Weapon Aspects Upgrade System
+ House Contractor Cosmetics & Modifiers
+ Wretched Broker Resource Exchange
+ Fated List Quest System
+ God Mode & Hell Mode
+ plus, many other features and surprises not list here!