Tell us about yourself aanthonyz1, what experience do you have with pixel art and graphics in general?
That Chasm game uses a very harmonious palette, analogous colours. It gives me the feeling of something classic and mature, tending to realism.
The colours for that C-Wars game, mostly for the characters, seem more stylised\cartoonish, which is understandable given its "anime" context.
The strongest difference between those games is the character art.
For Chasm every character seems unique, having a different
model (the underlying structure). This contributes to a greater variety of characters.
For C-Wars however, the characters seem very "templated" in that they are all derived from a generic model. This is more easily seen in the following image rather than in the characters themselves:
How many of their characters could we fit in that dark silhouette in the top right corner? To me that seems like the template that the artist is using. With different hairstyles, most of their characters are using that structure.
This doesn't make it look bad, it's just the way that they chose to have their characters made.
Regardless of the art direction that you choose, you should first be able to draw your characters traditionally (large size, pencil and paper) if you want those results, being able to convey volume, posing and expression.
The "pixel art" part would come later, as a sort of low resolution, reduced version based on your drawings.
If you can't draw appealing characters on paper at normal sizes, it's unlikely that you will get satisfactory results when plotting pixel art either.