Deadeus is an authentic horror Gameboy game developed using Chris Maltby’s GB Studio engine, Featuring music by Stuart Busby.
Deadeus, a horror game for the classic Nintendo Game Boy handheld, is currently available for pre-order.
"Retro publisher Incube8 Games, games producer Spacebot Interactive, and indie development studio IZMA, today announced the next edition for the physical cartridge of "Deadeus", for the Nintendo Game Boy." - Incube8 Games/Spacebot Interactive/IZMA.
The average cost of Game Boy games has been steadily rising for years. If you look at the overall price growth, which has doubled within the last five years, then it should be pretty clear Game Boy game prices are following the trend of increasing retro video game prices.
You would have to be crazy to keep a Pokemon game in the box after getting it as a kid, though.
I still have my Final Fantasy Adventure and Zelda: Link's Awakening, but loose. I haven't had the box in... I don't know, a couple decades?