Aska, you are under a clock for attacks and winter. Aska's NPC villagers are worthless. The amount of handholding you are forced to do is a game killer. You can give people everything they need to thrive and they will stand there and starve to death. I favor the building in Aska because the construction footprint is the actual footprint. The level of micro management needed is why I quit Aska.

In contrast, Bellwrights npc's are brilliant worker bees that get things done as intended. AS LONG as you get all your priority numbers set correctly. One spot I think Bellwright sux is in its construction. When building you have a pointless construction footprint and the finished objects footprint. For some lame reason, the devs thought it was a great idea to have a massive under-construction footprint that messes big time with placement and camp layout.

Aska you can manipulate the terrain and Bell you cannot. Aska auto flattens areas to a point where as Bell will not and prevents you from building in many good spots because of a tiny bump or lump in the dirt. Both have a decent-sized map but Aska uses seeds and has unlimited variation. Bell is static. However, Bell does have extremely subtle differences from one game to another.

Overall, I would say Bell is the superior game on many levels. Both are early access and need major changes, but that's how it normally is.