What about an opus 88? Massive ink capacity, shutoff valve so pretty much never leaks, pretty sure they’re quite durable, standard JoWo nib Edit: whoops didn’t see you didn’t want screw cap - I use a pilot e95s daily which is fantastic but may not have the ink capacity you want

Hades or dead cells - both are fantastic roguelites that you can pretty much pause at any time and have loads of replayability