Hi there!
First of all thank you for taking the time to put this together.
Although I know, that GMs are encouraged to make their own rules/bend the existing ones if they see fit, I would still like to know, how several parts I'm not so sure about were intended:
1. The saving throws seem to be alot harder to make, than in other retroclones/OD&D itself. A first level wizard without any statbonus (not too unreasonable to assume) would need to roll a 18 or higher if I'm not mistaken (class bonus+level/2+d20 roll), whereas he would only need like a 16 or something along those lines in OD&D. Is that intentional?
2. How do saving throws work for monsters? The text seems to imply, that it is a static number (10+level), but I'm not sure how that should work. The other way I could see it working is d20+10+level, but that seems to make monsters save a lot more than they should.
3. How do saving throws work for spells like fireball or lightning bolt? Does a successful save negate all damage or only halfe of the damage? Do I use a mindsave or a reflexsave?
Thanks in advance.