Text: at the end of the world ragnarok the giants, gods and humans would meet in a final deadly battle.

Correct capitalization: At the end of the world Ragnarok the giants, gods and humans would meet in a final deadly battle.

Text: the eyes should be kept shut for the reasons mentioned above.

Correct capitalization: The eyes should be kept shut for the reasons mentioned above.

Text: it is a game of classic bubble shooter. just shoot the bubbles with similarly colored bubbles to blast them away.

Correct capitalization: It is a game of classic Bubble Shooter. Just shoot the bubbles with similarly colored bubbles to blast them away.

Text: foam: cold cured foam. covers: fixed. black leather (a) or cow hide (b).

Correct capitalization:
Foam: Cold cured foam. Covers: Fixed. Black leather (A) or cow hide (B).