I went back to town to rest at the inn, and the inn was gone/broken, and then I left town and I was in the ocean.
I crashed the game because I tried to equip my priest, and apparently I didn't have an item he could use.
I bought only one copy of each item but I was able to equip my entire party.
I pressed Enter (i.e. the "start" button) on the Start screen, and it told me my party was lvl 1 with 0/0 hp.
I had a random encounter above a river tile, and after the combat I was in the river tile below.
I can phase through trees, walls, water and the like by moving "diagonally". I think the game is getting it's movement detection mixed up e.g. I hold up+right, and the tile above me is empty, so I move right, even though there is a solid object to my right