Publisher CoderChild has filled us in, however, and it's a rather intriguing project. It was originally developed by a team including NeneFranz in 2011 for a contest, in which multiple games were developed on retro hardware. It won MSXdev'11 which, as the name suggests, challenged teams to create games that would run on an MSX system - the MSX was a big deal in Japan prior to Nintendo's Famicom, and even played host to the first Metal Gear game.
As such this is a platformer rooted in an 8-bit retro vibe, albeit with the modern addition of online leaderboards. It's a small game - hence the €1.99 / £1.99 price tag - and looks to have relatively simple but fast-paced platforming at its core as you try and collect eight stars. It's also coming to North America soon, with a current target of 5th March.
You can see a trailer below, and our curiosity has certainly been piqued - check it out and let us know what you think.