It's mainly a challenge for me, but feel free to join if you want to even if you're not part of the sub. 
I'm subscribed to Broken Binding's subscription service, though I totally suck at timely reading of the books they have. Therefore I'm making a challenge to read at least a third of the books that are part of the sub in 2023 (I'm counting the books they send out in 2023, because that means that hopefully I'll receive them in time to read them this year). 
I will update when series are announced. (First 12 prompts will be bonus prompts with titles, last 4 will be regular prompts to add the books I decide to read in 2023.)