я захожу и вылезает фатал ерор 0_0 че делать то вообще

As the title says, this fixed the issue for me. I hope it works for you as well.

Any idea why?

「召喚史萊姆」不消耗MP，導致無腦使用這個就能躺贏 Casting "Summoning Slime" doesn't cost any MP. You can auto-win by keep casting "summoning slime".

I think this game looks quite alright - and I like the art style, but to be honest, I don't think I'll have time to play this in the next few years. So... what I'm wondering is if the game will even exist then? Is there a way to play this game offline, just to see what the game mechanics are like? You know, practice with the spells, shoot some dummy enemies to see how damage, knockback, and so on are like? Also - it would be nice just to be able to play with the mechanics and levels of this game even...