You fall into the crystal temple holding three shiny gems a ruby, a diamond and a emerald. To escape and get some of that loot you are gonna have to fight enemies and do some platforming to get there.

Controls:

A,D - moving left and right

Space - Jump

S - faster falling

Left Mouse Button - Attack with the sword

Right Mouse Button - Defending with the sword, plus parry if you do it at the right time

Alt - horizontal dash