I played Once In A Lifetime a month or so ago and thought it was alright. While the story was kinda meh in my opinion, and I didn't like how two girls basically had the same face, I do like the quirky sense of humor with the meta jokes here and there. Also, impreg is kinda my biggest fetish so its a plus.
Eternum is basically a huge leap forward. I actually find the story very intriguing and the setting is also pretty cool. A mix of Sword Art Online with Ready Player One. The character models are great and the h-scenes are solid as well. The MC still looks kinda weird but I'd say he looks much better. And despite all that, the sense of humor from Once In A Lifetime still persists.
Top tier stuff man. I'll sub to the patreon.