Both of these are BL of the "Unlimited Flow" (continuous horror games) Genre.
In Earth is Online, the main character is cold/calculative while the male lead is very strong and strategic.
In Kaleidoscope of Death, the main character is very adaptable and the male lead is a survivor.
While Earth is Online is a bit more on the comedic side, Kaleidoscope of Death is very raw with its characters and you can truly feel their despair in every world.
In Earth is Online, the main character is cold/calculative while the male lead is very strong and strategic.
In Kaleidoscope of Death, the main character is very adaptable and the male lead is a survivor.
While Earth is Online is a bit more on the comedic side, Kaleidoscope of Death is very raw with its characters and you can truly feel their despair in every world.