I've spent some hours reading your previous books but those paid ones (same for handheld consoles) are under unfair rules from itch :/ Minimum paiement required for EU users is 100 cents, so no way for you to make a 50% off since EU users would still have to pay 100% anyway ^^ Get it ?
Thx anyway, nice compiling work, great for train/airplane travels on iPad
BTW any new one in project ?