Oh, exact, i didn't think about natural food, but yes, some Evons need special food -> i keep the idea :) , it can make the player life easy...
About story, there are some lines, i continue to work on, all is founded about the evolution theory :
During the evolution of species, an animal from sea developps special talents, cos of a DNA mutation : it was evolved from an animal like an ancient eel (non-existent in this old era), with an electric power, but this one had a really big power. It was the first Evon. It was so powerful that others animals can't fight against him, if they were attacked, they were "sure" to be destroyed. They just had to flee.
After years, this Evon (a male) has reproduced, without problem, all other males can't fight against him, and his mutation become common.
This Evon was so powerful that watery animals were intended to disappear. But another animals developps a power : he don't suffer of electric shocks. Like the first Evon, this mutation was a favour, when his peers die, him survive -> This mutation become common after multiple generation.
Years after years, new Evons appears with an exponential factor, they start to use new power : water, fire, poison, some Evons become similar to vegetals... A new creature was powerfuller than an old one ,or can resist to him, etc...
Earth and air animals finished to be submit to the same evolution effect.
But an event happened : a meteor coming from space crashed on Earth destroy a large population of Evons, and all giant dinosaurs(era's animals). After this, survivors Evons needn't more power, there were less species..
After a while, the evolution restart.
"Basics" animals weren't in this competition, they were forgotten by Evons, and continue to live...They weren't the good preys : too small, with a body poor in energy...
But the body has limits, it can't be use too much, powerfuller Evons can reproduced them and defends their offspring, but they don't live a long time...2 years, 1 years, and the formidable fighting creature die...The evolution had reached a limit in this world, some of the best Evons disappear.
This limitation had an effect : it can't exist Evons highly powerfuller than others, there had a levelling of Evons' power, with small variations to the top or the bottom, but no creature can move away far of this level, if it did, it disappears.
Years and centuries passed...An animal - not an Evon - developps a new talent, non-existent in Evons : the intelligence, it was the rise of mankind. With his intelligence, the man can fight against Evon, and he dominated speedly the world.
Evons had physical body limits, but their spirit weren't very developped. So it did. It wasn't an advanced intelligence, like the man, but sufficient to fight against mankind, and to transmit knowledge between generations.
A millenium later, it was the era of darkness for mankind, Evons were able to resist because of their intelligence.
Some villages were destroyed, if the man wanted to survive, it had to gather in big cities. It did that, but cities were isolated poles. Convoys travel between cities. They were often attacked.
With their intelligence, parents Evons learned to their offspring how to behave with the man, their adversary
Somewhere in the world, some people try to catch Evons and tame them, it was long and difficult, because of Evons knowledge who say them "resist", but possible.
These people were called "Evon trainer". Those who pay them, were sure to travel without Evons attacks : the trainer were here to defend them, or the convoy.
In all cities, an the better Evon trainer called Champion were promoted at the defense of the city if it was attacked.
In a mine were discovered a strange rock; minors were attacked by a ground Evon. To defend themselves, they throw stoness on it, with dispair. One take a stone with a special blur transparent aspect, it was an uncommon and unused mineral found sometimes in mines. When the Evon was hit by the stone, it disappear, all it's body energy were absorbed by the stone, which get another aspect, colored, with a nebula in it, that's why this rock were called Nebula.
The discover were quickly known all around the world, and mankind start to exploit the Nebula. A machine commonly called NS or NSphere (for Nebula Sphere) , made with Nebula and other minerals was available in the main cities shop, for trainers. They exploit the NS to catch,transport and tame Evons easily.
Years passed, Evons learned that the discover wasn't a good thing for them, they stop their attacks, or made less; mankind could restart its expansion.
The trainer job was so much common that mankind were near to nature, and broadly don't try to developp its more than need, in respect for Evons.
Nowadays...Mankind has developp it, no more than need. Of the old times, it stay isolated big cities system, Evon trainers...And Evons has learned to like their condition of fighting creatures : they travel, become powerfuller, because of the training, meet others Evons, and why not an Evon of the same species but the opposed gender...
Champions who defends cities exist no more, but they become a representative of a city activity, it was good for tourism, for example; they become too great adversary, and every trainer who fight against them and win is sure to become a great trainer...If it win against all trainers, he is allowed to fight against nation's Evons masters, and after, world's Evon masters...And THE master's champion.
All get good, but a new Evon appear, highly powerfuller than the maximum possible level, it is able to destroy one city with only one attack, and only the army seems to be able to make him die...Evons experts are in big activity, how can this Evon exist? Why is he so more powerful, what had can push him to evolved like this?...It's the first campaign of missions...
x_x There is more than an hour i'm writing that, i hope really my text will be read, and it's understandable...If you see often the same words, please excuse my miss of vocabulary...
Now, i can show two screenshots, taken from my editor :
Err, what can i say more?
Ah, yes, of course, my bug problem has disappear, i have found a solution, it's really a good new for me...(...and for you? ;) )