As a professional, I have come across many articles and blogs discussing games that are proprietary without a licensing agreement. These games have been developed and published by companies without obtaining the necessary copyrights or licenses. In this article, we will discuss 5 such games that are proprietary without a licensing agreement.

1. Tetris:

Tetris is a classic game that has been enjoyed by players for over four decades. However, the game is still proprietary without a licensing agreement. The game was created by Alexey Pajitnov in 1984, but the licensing rights were granted to the Soviet government at the time. When the Soviet Union collapsed, the licensing rights to Tetris passed to a few different companies, resulting in numerous legal disputes over the years.

2. Flappy Bird:

Flappy Bird was a viral mobile game back in 2014, which was developed by Vietnamese developer Nguyen Ha Dong. The game was insanely popular for its simplicity and addictive gameplay, but it was later discovered that the game was developed without the proper licensing. The game was pulled from the app stores, and Nguyen was forced to take it down, resulting in a huge controversy.

3. Candy Crush:

Candy Crush is another popular mobile game developed by King Entertainment. The game is still proprietary without a licensing agreement, even though it has been around for more than 8 years. The game has been accused of infringing on the copyrights of other games, such as Bejeweled, resulting in a few legal battles over the years.

4. Angry Birds:

Angry Birds is a popular game developed by Rovio Entertainment, which has been around since 2009. Despite its immense popularity, the game is still proprietary without a licensing agreement. The game has been accused of copying the gameplay mechanics of other games, such as Crush the Castle, resulting in a few legal disputes over the years.

5. Subway Surfers:

Subway Surfers is a popular mobile game developed by Kiloo Games. The game is still proprietary without a licensing agreement, despite being around for over 9 years. The game has been accused of copying the character designs and gameplay mechanics of other games, such as Temple Run, resulting in a few legal disputes over the years.

In conclusion, there are many games out there that are proprietary without a licensing agreement. These games have been developed and published by companies without obtaining the necessary copyrights or licenses. However, it is important to note that copyright infringement can result in legal consequences and should be avoided at all costs. As gamers and game developers, it is our responsibility to respect the intellectual property rights of others and create original content that is unique and enjoyable for all.