Domain of Hallucination

Domain of Hallucination is a roguelite game in pixel art style. In keeping with this genre, progress is reset when the character dies. The game features meta-progression, in which content can be continuously unlocked over multiple playthroughs and the player experience can be customised. 

During a playthrough, players can build their own game world and fight various bullet hell bosses. Within a hallucination, you fight your way through three areas from the memory of a magician with amnesia, revealing his past.

Source: https://hub.hslu.ch/design-film-kunst/katalog/cozzio-schuerch-widmer-wiesli/