For the most part, games run in full screen mode by default. However, this is not always convenient, therefore there is a window mode, in which the size of the playing field is regulated almost arbitrarily.
Instructions
Step 1
First of all, enable windowed mode. The transition to such can occur by pressing the combination "Alt" + "Tab"; setting the appropriate item in the options; via the console or using a parameter. The latter is done as follows: you need to create a shortcut to the program, go to its properties and in the "Object" field after the file address, sign -windowed. This is a parameter command that will launch the game in windowed mode each time, if supported.
Step 2
"Pull" the window by "picking up" it by the corner. In other words, try to do it the way you resize any open folder. Please note that you cannot change the scale indefinitely - there is a minimum limit set by the program. However, this method is not always supported, so do not be alarmed if it does not help.
Step 3
Change the resolution. This is the number of pixels (dots) that the game window occupies. Therefore, if the internal resolution of the game matches the same value for the monitor, then you will see only a frame around the edges of the tap, and the window will still take up all the available space. There are obviously two ways out: to decrease the performance in the game or increase it in the system. So, if you set the internal value to 800 * 600, and the external value to 1600 * 1200, then the program will occupy only a quarter of the screen.
Step 4
Download a newer version of the game. For example, in Super Meat Boy it was supposed to be windowed from the start, but it just didn't work on most systems. After installing several updates and patches, the problem was solved, and the game calmly reacted to the decrease in the field allocated to it.
Step 5
Check the forums and communities of the players. This item is especially relevant for an online game: it is often convenient to play in several windows for different characters, so users create their own programs and find ways to reduce the field to the required size, unique for each game, if this is not provided by the authors.