I'll be honest... The lore is useless... But for those who care there is still one.

Factions.
YSA: YCA stands for "Yellowcorner's Socialist Alliance". Their ideology if it wasn't clear is socialism(a big mix of the main ones. Marxism, Leninism and whatever). They are situated in the northern area of the main archipelago map(uploaded on Scratch). It's a relatively happy country and pretty successful.

YUR: YUR stands for "Yellowcorner's United Regions". Their ideology is (still to be choosed). They're situated South of the map(//). It's a relatively advanced and rich country.

Rebels/PMCs: The rebels and the PMCs(Private Military Company/ies) are small groups that either fight for money or ideology. They use guerrilla tactics, light armored "home made" vehicles and use more or less rusty weapons.

NATO(Provisional): The NATO is an alliance, mainly funded by the YUR and it's relatively powerful and quite capable. They have pretty strict rules of engagement and try their best to stay out of any conflict.

GD: GD stands for "Global Defence" and they're an alliance to keep the world peace. They use light green uniforms and vehicles and they are responsible for civilian evacuation and peace keeping.

Lore:
In the 1960's the YUR declared war on the YAS, pulling into the war the NATO. The YAS have lost most of their lands as the YUR's technological advantage took a heavy toll on the battle results. The NATO coubtries are against the war... But they will help keep the YAS' captured territories. Multiple PMCs and Rebels raised to help the YAS against the YUR. Meanwhile the GD is taking care of the civilians and trying to reach a peace pact.

(I still need to work on the story... It really isn't the greatest now.)