It is legal, or illegal, depending on the conditions you signed up for, when obtaining the program. You can check the licensing conditions from the manufacturer - but as a general rule of thumb, if you pay money for a program, it is a commercial program, it is copyrighted, and you are not allowed to make copies, except for backups. You can usually install it on more than one computer that belongs to you, as long as you don't use both copies of the program at the same time. But once again, check the licensing conditions for details.
The game Operation is protected by copyright and trademark.
The game Jenga® is protected by copyright, trademark, and patent.The original graphics are protected by copyright laws.The name Jenga® is a registered trademarkThe "method of operation" (playing the game) is patented.
Ideas cannot be protected by copyright; only the expression of the ideas.
A completely new and innovative engine might be patented, but beyond that, special effects would be protected by copyright, like other aspects of the game.
It is almost a universal fact that all video games are protected by copyright, To avoid any inlawful infringement (for which you could be sued) it would be best to contact the publisher/producer of the game and request permission.
Even though a gaming video can violate the copyright of the game itself, the video is also copyrighted as a derivative piece by the person who made the video.
No, because your drawings of the protected characters are derivative works of the characters, which is one of the exclusive rights of the copyright holder. If the use is clearly parody or commentary, you might be able to defend the use as fair, but it would be very risky to rely on that. You would want to talk to an experienced copyright attorney before going in that direction.
Taito Corp (from http://www.neave.com/games/spaceinvaders/)
Not legality The game is copyright protected and sold
Nowhere, because all video game music is protected by copyright law.
The creature may not be protected, but expressions (descriptions, drawings, etc) may be protected.
The idea... yes. The actual video game... No. I believe that falls under the category of copyright infringement.