DASH is a predesigned game but most importantly one which allows you to build one yourself. You take full control of a custom platformer hero and level editor as you create and master your very own 2D platformer world - block by block.
For those in need of a good-looking action-RPG that offers tons of loot, Last Epoch certainly seems interesting. There's also now a Linux demo available.
The Swords of Ditto is the new compact action-RPG from developer onebitbeyond and publisher Devolver Digital and it just released, although it has a big flaw right now on Linux.
Remember Apocryph? The brutal FPS inspired by the likes of Hexen, Heretic, Painkiller and so on. Well the developer has announced that they're aiming for an April 27th release.