An Easter Egg from Wonder Boy: The Dragon's Trap developers Lizardcube lets you play in both the retro and modern graphic styles at the same time.
Good move by the devs imo (I'm not the only one that likes the retro look).
It's not a secret. The devs have spoken about the future multiple times.
I'd hardly call that an Easter Egg. Seems like a glitch to me.
N4G is a community of gamers posting and discussing the latest game news. It’s part of NewsBoiler, a network of social news sites covering today’s pop culture.