The idea is original, but it feels extreme for no real reason. Locking yourself away and playing for 112 hours straight feels more like a chore than a pleasure. In the end, you finished 10 games, but it seems like you rushed through them rather than truly enjoying them.
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Honestly, I think you're being a bit lenient with this game. Even putting aside the context of its release, Sonic 06 is still riddled with fundamental problems: unstable gameplay, bugs, uneven pacing… it's not just a matter of “bad timing”.
Tutuapp
If you prioritize portability, weight, fluidity in emulation or indie games, and a good power/price balance → ROG Ally will probably be better.
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You're not alone in feeling this way! The Mega Man Zero series is indeed known for its particularly high difficulty, especially compared to the Mega Man X series
The version of Atmosphère you are using (18) might not be fully compatible with firmware 19.0.1, especially if specific optimizations or patches are needed for new games like Tears of the Kingdom.