A game that one day appeared on the market without any prior announcements or advertisements. An ordinary game wouldn't even have had the weight to flop.
But Sisyphus Online slowly climbed the ranks, becoming increasingly popular for a multitude of reasons, the extreme quality, the difficulty, the simplicity of the game's end game goal, and, most importantly, the money-making aspect.
Out of those reasons, only one made Mino start playing it. But the rest is what got him addicted and made him start climbing to the top, uncovering secrets, making friends, pissing off enemies, and earning money.