c.0.9.0 is much more stable. I have been playing it on an old chromebook for at least 3 days solid now, and it has only crashed 2x, but didnt loose progress, just page reload.
the only problem i find now, after level 40 enemy and stacks dont take into account inability to get better gear. ie the difficulty at level 43 goes from kill all in 15-20 seconds, to wipe.
i just complete my (theoretically) best run so far, got to level 43 at least 3-4 times over 3-4 days solid play (im watching videos while playing), but this was the first time I got to upgrade shop 20k at level 40 (2 other times at level 43)
I have been playing these demo fo more than a few years now, since the first week of of release (YT:Splattercat preview), and although it as differcult I could get past level 50 at least 1x per day (based on multi-day solid play) and on more than one occasion, reach over level 100.
that is not possible any longer. not so enjoyable to play any more. frustrating knowing i'm going to get wiped at level 43, no matter what gear i have, nor build makeup