From the Designer's Website:
Grosses boules magiques.
User Translation from French:
Big magical balls.
("Sphérurges" is French for "Spheromancers".)
Characters have 10 points to distribute between three mandatory attributes: corps (body), esprit (spirit), vie (life); and one optional attribute: sphère (sphere, which has an associated colour from the list: blue, red, green, yellow, purple). Vie is a measure of health and is not used to determine actions.
Task resolution is performed by rolling a number of six-sided dice equal to the appropriate attribute value, keeping the single best die roll. To this roll, add 2 if a double was rolled, 3 if a triple was rolled, etc. (regardless of whether these were of the same value as the highest die roll or not). If the result is equal to or higher than a target difficulty number (or an opponent's result if in an opposed action) then the character is successful.
The mysterious spheres grant special powers to attuned people like the player characters.